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class="vector-toc-list"> <li id="toc-Hardware" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Hardware"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Hardware</span> </div> </a> <ul id="toc-Hardware-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-End_user" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#End_user"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>End user</span> </div> </a> <ul id="toc-End_user-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Core" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Core"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>Core</span> </div> </a> <ul id="toc-Core-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Disadvantages/limitations" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Disadvantages/limitations"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Disadvantages/limitations</span> </div> </a> <ul id="toc-Disadvantages/limitations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Software_compatibility" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Software_compatibility"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Software compatibility</span> </div> </a> <ul id="toc-Software_compatibility-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Installation_of_programs" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Installation_of_programs"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Installation of programs</span> </div> </a> <ul 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reading</span> </div> </a> <ul id="toc-Further_reading-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of 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Available in 18 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-18" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">18 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Windows_XP#64_bits" title="Windows XP – Catalan" lang="ca" hreflang="ca" data-title="Windows XP" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Czech" lang="cs" hreflang="cs" data-title="Windows XP Professional x64 Edition" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Greek" lang="el" hreflang="el" data-title="Windows XP Professional x64 Edition" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Spanish" lang="es" hreflang="es" data-title="Windows XP Professional x64 Edition" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Microsoft_Windows_XP_64" title="Microsoft Windows XP 64 – French" lang="fr" hreflang="fr" data-title="Microsoft Windows XP 64" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9C%88%EB%8F%84%EC%9A%B0_XP_%ED%94%84%EB%A1%9C%ED%8E%98%EC%85%94%EB%84%90_x64_%EC%97%90%EB%94%94%EC%85%98" title="윈도우 XP 프로페셔널 x64 에디션 – Korean" lang="ko" hreflang="ko" data-title="윈도우 XP 프로페셔널 x64 에디션" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Armenian" lang="hy" hreflang="hy" data-title="Windows XP Professional x64 Edition" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Italian" lang="it" hreflang="it" data-title="Windows XP Professional x64 Edition" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Dutch" lang="nl" hreflang="nl" data-title="Windows XP Professional x64 Edition" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Microsoft_Windows_XP_Professional_x64_Edition" title="Microsoft Windows XP Professional x64 Edition – Japanese" lang="ja" hreflang="ja" data-title="Microsoft Windows XP Professional x64 Edition" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Polish" lang="pl" hreflang="pl" data-title="Windows XP Professional x64 Edition" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Portuguese" lang="pt" hreflang="pt" data-title="Windows XP Professional x64 Edition" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Russian" lang="ru" hreflang="ru" data-title="Windows XP Professional x64 Edition" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Simple English" lang="en-simple" hreflang="en-simple" data-title="Windows XP Professional x64 Edition" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Turkish" lang="tr" hreflang="tr" data-title="Windows XP Professional x64 Edition" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Windows_XP_Professional_x64_Edition" title="Windows XP Professional x64 Edition – Ukrainian" lang="uk" hreflang="uk" data-title="Windows XP Professional x64 Edition" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link 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<div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Edition of Windows XP for x86-64 computers, released in 2005</div> <p class="mw-empty-elt"> </p> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For the 64-bit Windows XP for Itanium systems, see <a href="/wiki/Windows_XP_64-bit_Edition" class="mw-redirect" title="Windows XP 64-bit Edition">Windows XP 64-bit Edition</a>.</div> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Operating system</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vevent"><caption class="infobox-title summary">Windows XP Professional x64 Edition</caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Windows_XP_Professional_x64_Edition_logo_and_wordmark.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/9/91/Windows_XP_Professional_x64_Edition_logo_and_wordmark.png/200px-Windows_XP_Professional_x64_Edition_logo_and_wordmark.png" decoding="async" width="200" height="45" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/91/Windows_XP_Professional_x64_Edition_logo_and_wordmark.png/300px-Windows_XP_Professional_x64_Edition_logo_and_wordmark.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/91/Windows_XP_Professional_x64_Edition_logo_and_wordmark.png/400px-Windows_XP_Professional_x64_Edition_logo_and_wordmark.png 2x" data-file-width="664" data-file-height="151" /></a></span></td></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Windows_XP_Pro_x64.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/0/0b/Windows_XP_Pro_x64.png/300px-Windows_XP_Pro_x64.png" decoding="async" width="300" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/0/0b/Windows_XP_Pro_x64.png 1.5x" data-file-width="365" data-file-height="274" /></a></span><div class="infobox-caption">Screenshot of Windows XP Professional x64 Edition running the Luna visual style, showing the start menu and the "About Windows" window</div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer</a></th><td class="infobox-data"><a href="/wiki/Microsoft" title="Microsoft">Microsoft</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">OS family</th><td class="infobox-data"><a href="/wiki/Windows_NT" title="Windows NT">Windows NT</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Working state</th><td class="infobox-data">No longer supported</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Source model</th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><a href="/wiki/Proprietary_software" title="Proprietary software">Closed-source</a></li><li><a href="/wiki/Source-available_software" title="Source-available software">Source-available</a> (through <a href="/wiki/Shared_Source_Initiative" title="Shared Source Initiative">Shared Source Initiative</a>)</li></ul></div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">April 25, 2005<span class="noprint">; 19 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">2005-04-25</span>)</span><sup id="cite_ref-release-date_1-0" class="reference"><a href="#cite_note-release-date-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Final release</a></th><td class="infobox-data">Service Pack 2 with May 14, 2019 security update (5.2.3790.6787) / April 19, 2019<span class="noprint">; 5 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">2019-04-19</span>)</span><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Kernel_(operating_system)" title="Kernel (operating system)">Kernel</a> type</th><td class="infobox-data"><a href="/wiki/Hybrid_kernel" title="Hybrid kernel">Hybrid kernel</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/User_interface" title="User interface">Default<br />user interface</a></th><td class="infobox-data"><a href="/wiki/Graphical_user_interface" title="Graphical user interface">Graphical user interface</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="/wiki/Proprietary_software" title="Proprietary software">Proprietary</a> <a href="/wiki/Commercial_software" title="Commercial software">commercial software</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Official website</th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20110424080640/http://windows.microsoft.com:80/en-US/windows-xp/setup/windows-xp-professional-x64-edition-overview">Windows XP Professional x64 Edition overview</a> (archived at <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>)</td></tr><tr><th colspan="2" class="infobox-header">Support status</th></tr><tr><td colspan="2" class="infobox-full-data">Mainstream support ended on April 14, 2009.<sup id="cite_ref-lifecycleXPx64_3-0" class="reference"><a href="#cite_note-lifecycleXPx64-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><br />Extended support ended on April 8, 2014.<sup id="cite_ref-lifecycleXPx64_3-1" class="reference"><a href="#cite_note-lifecycleXPx64-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></td></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist 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a{color:var(--color-progressive)!important}}@media print{body.ns-0 .mw-parser-output .sidebar{display:none!important}}</style><table class="sidebar nomobile nowraplinks" style="width:auto"><tbody><tr><td class="sidebar-pretitle" style="border-top:#ccf 5px solid">Part of <a href="/wiki/Category:Windows_XP" title="Category:Windows XP">a series of articles</a> on</td></tr><tr><th class="sidebar-title-with-pretitle" style="border-bottom:#ccf 5px solid"><a href="/wiki/Windows_XP" title="Windows XP">Windows XP</a></th></tr><tr><td class="sidebar-content plainlist"> <ul><li><a href="/wiki/Windows_XP_editions" title="Windows XP editions">Editions</a></li> <li><a href="/wiki/Features_new_to_Windows_XP" title="Features new to Windows XP">New features</a></li> <li><a href="/wiki/List_of_features_removed_in_Windows_XP" title="List of features removed in Windows XP">Removed features</a></li> <li><a href="/wiki/Criticism_of_Windows_XP" title="Criticism of Windows XP">Criticism</a></li> <li><a href="/wiki/Development_of_Windows_XP" title="Development of Windows XP">Development history</a></li> <li><a href="/wiki/Comparison_of_Windows_Vista_and_Windows_XP" title="Comparison of Windows Vista and Windows XP">XP vs. Vista</a></li></ul></td> </tr><tr><th class="sidebar-heading" style="background:#e4e4f0"> Siblings</th></tr><tr><td class="sidebar-content plainlist"> <ul><li><a class="mw-selflink selflink">Windows XP x64 Edition</a></li> <li><a href="/wiki/Windows_XP_Media_Center_Edition" title="Windows XP Media Center Edition">Windows XP Media Center Edition</a></li> <li><a href="/wiki/Windows_Server_2003" title="Windows Server 2003">Windows Server 2003</a></li> <li><a href="/wiki/Windows_Mobile_2003" title="Windows Mobile 2003">Windows Mobile 2003</a></li> <li><a href="/wiki/Windows_Mobile_5.0" title="Windows Mobile 5.0">Windows Mobile 5.0</a></li> <li><a href="/wiki/Windows_Fundamentals_for_Legacy_PCs" title="Windows Fundamentals for Legacy PCs">Windows Fundamentals</a></li></ul> <ul><li><a href="/wiki/Pocket_PC_2002" title="Pocket PC 2002">Pocket PC 2002</a></li></ul></td> </tr><tr><td class="sidebar-navbar"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Windows_XP" title="Template:Windows XP"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Windows_XP" title="Template talk:Windows XP"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Windows_XP" title="Special:EditPage/Template:Windows XP"><abbr title="Edit this template">e</abbr></a></li></ul></div></td></tr></tbody></table> <p><b>Microsoft Windows XP Professional x64 Edition</b> is an edition of <a href="/wiki/Windows_XP" title="Windows XP">Windows XP</a> for <a href="/wiki/X86-64" title="X86-64">x86-64</a> personal computers. It was released by Microsoft on April 25, 2005, around the same time as with the x86-64 versions of <a href="/wiki/Windows_Server_2003" title="Windows Server 2003">Windows Server 2003</a>. It is designed to use the expanded 64-bit memory address space provided by the x86-64 architecture.<sup id="cite_ref-release-date_1-1" class="reference"><a href="#cite_note-release-date-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>The primary benefit of moving to 64-bit is the increase in the maximum allocatable <a href="/wiki/Random-access_memory" title="Random-access memory">random-access memory</a> (RAM). 32-bit editions of Windows XP are limited to a total of 4 <a href="/wiki/Gigabyte" title="Gigabyte">gigabytes</a>. Although the theoretical memory limit of a 64-bit computer is about 16 <a href="/wiki/Exabyte" class="mw-redirect" title="Exabyte">exabytes</a> (17.1 billion gigabytes), Windows XP x64 is limited to 128<span class="nowrap"> </span>GB of physical memory and 16 <a href="/wiki/Terabyte" class="mw-redirect" title="Terabyte">terabytes</a> of <a href="/wiki/Virtual_memory" title="Virtual memory">virtual memory</a>.<sup id="cite_ref-ZDImportance64_4-0" class="reference"><a href="#cite_note-ZDImportance64-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>Windows XP Professional x64 Edition uses the same kernel and code tree as Windows Server 2003<sup id="cite_ref-XPx64Description_5-0" class="reference"><a href="#cite_note-XPx64Description-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> and is serviced by the same service packs.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> However, it includes client features of Windows XP such as <a href="/wiki/System_Restore" title="System Restore">System Restore</a>, <a href="/wiki/Windows_Messenger" title="Windows Messenger">Windows Messenger</a>, <a href="/wiki/Fast_User_Switching" class="mw-redirect" title="Fast User Switching">Fast User Switching</a>, Welcome Screen, <a href="/wiki/Security_and_Maintenance" title="Security and Maintenance">Security Center</a> and games, which Windows Server 2003 does not have. </p><p>Windows XP Professional x64 Edition is not to be confused with <a href="/wiki/Windows_XP_editions#Windows_XP_64-Bit_Edition" title="Windows XP editions">Windows XP 64-Bit Edition</a> as the latter was designed for <a href="/wiki/Itanium" title="Itanium">Itanium</a> architecture.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> During the initial development phases, Windows XP Professional x64 Edition was named <i>Windows XP 64-Bit Edition for 64-Bit Extended Systems</i><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> and later as <i>Windows XP 64-Bit Edition for Extended Systems</i>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Advantages">Advantages</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=1" title="Edit section: Advantages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Windows XP Professional x64 Edition offers a number of benefits/advantages over the main 32-bit x86 versions of Windows XP: </p> <div class="mw-heading mw-heading3"><h3 id="Hardware">Hardware</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=2" title="Edit section: Hardware"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Supports up to 128<span class="nowrap"> </span>GB of RAM.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> All other versions of Windows XP for x86 only supported up to 4 GB of RAM.</li> <li>Supports up to two physical <a href="/wiki/Central_processing_unit" title="Central processing unit">CPUs</a> (in separate physical sockets) and up to 64 logical processors<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> (i.e. <a href="/wiki/Multi-core_processor" title="Multi-core processor">cores</a> or <a href="/wiki/Hyper-threading" title="Hyper-threading">threads</a> on a single CPU). Windows XP Professional for x86 supported up to two physical CPUs but is limited to a maximum of 32 logical processors.</li> <li>Supports <a href="/wiki/GUID_Partition_Table" title="GUID Partition Table">GPT</a>-partitioned disks for data <a href="/wiki/Volume_(computing)" title="Volume (computing)">volumes</a> (but not bootable volumes) after SP1,<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> which allows disks greater than 2<span class="nowrap"> </span>TB to be used as a single GPT partition for storing data.</li></ul> <div class="mw-heading mw-heading3"><h3 id="End_user">End user</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=3" title="Edit section: End user"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Windows XP Professional x64 Edition allows for faster encoding of audio or video, higher performance in video gaming and faster <a href="/wiki/Rendering_(computer_graphics)" title="Rendering (computer graphics)">3D rendering</a> than 32-bit versions of Windows XP, in software optimized for 64-bit hardware.</li> <li><a href="/wiki/Internet_Information_Services" title="Internet Information Services">Internet Information Services</a> (IIS) version 6.0, the same version that was included in Windows Server 2003, is included with Windows XP Professional x64 Edition. All other 32-bit editions of Windows XP have IIS v5.1.</li> <li><a href="/wiki/Windows_Media_Player" title="Windows Media Player">Windows Media Player</a> version 10, the version that came with Windows Server 2003 Service Pack 1, is included with Windows XP Profesional x64 Edition.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Windows XP Professional for x86 originally shipped with Windows Media Player version 8 from RTM to Service Pack 1 and later came with Windows Media Player 9 from Service Pack 2 onwards, with <a href="/wiki/Windows_XP_Media_Center_Edition_2005" class="mw-redirect" title="Windows XP Media Center Edition 2005">Windows XP Media Center Edition 2005</a> receiving Windows Media Player 10. Windows Media Player 11 is available for x86 versions of Windows XP Service Pack 2 or later.</li> <li>Internet Protocol Security (<a href="/wiki/IPsec" title="IPsec">IPsec</a>) features and improvements made in Windows Server 2003 were included with Windows XP Professional x64 Edition.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Shadow_Copy" title="Shadow Copy">Shadow Copy</a>, a feature that automatically creates daily backups of files and folders, was first introduced in Windows Server 2003 and is available in Windows XP Professional x64 Edition.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify"><span title="The text near this tag needs further explanation. (January 2014)">further explanation needed</span></a></i>]</sup></li> <li><a href="/wiki/Remote_Desktop_Services" title="Remote Desktop Services">Remote Desktop Services</a> supports Unicode keyboard input, client-side time-zone redirection, GDI+ rendering primitives for improved performance, FIPS encryption, fallback printer driver, auto-reconnect and new Group Policy settings.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Files_and_Settings_Transfer_Wizard" class="mw-redirect" title="Files and Settings Transfer Wizard">Files and Settings Transfer Wizard</a> supports migrating settings from both 32-bit and 64-bit Windows XP PCs.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading3"><h3 id="Core">Core</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=4" title="Edit section: Core"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Windows XP Professional x64 Edition is based on the <a href="/wiki/Windows_Server_2003" title="Windows Server 2003">Windows Server 2003</a> kernel and codebase, which is newer than 32-bit Windows XP (by about two years) and has improvements to enhance scalability.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> It also introduces <a href="/wiki/Kernel_Patch_Protection" title="Kernel Patch Protection">Kernel Patch Protection</a> (also known as PatchGuard) to improve security by helping to eliminate rootkits.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Disadvantages/limitations"><span id="Disadvantages.2Flimitations"></span>Disadvantages/limitations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=5" title="Edit section: Disadvantages/limitations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There are some limitations which apply to Windows XP Professional x64 Edition: </p> <ul><li>Only 64-bit drivers are supported.<sup id="cite_ref-64-bitonly-rel-note_20-0" class="reference"><a href="#cite_note-64-bitonly-rel-note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup></li> <li>Any 32-bit <a href="/wiki/Windows_Explorer" class="mw-redirect" title="Windows Explorer">Windows Explorer</a> shell extensions fail to work with the 64-bit version of Windows Explorer, however Windows XP x64 Edition also ships with a 32-bit version of Windows Explorer.<sup id="cite_ref-XPx64ShellIssues_21-0" class="reference"><a href="#cite_note-XPx64ShellIssues-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> It is possible to make this as the default Windows Shell.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup></li> <li>No native support for <a href="/wiki/Type_1_and_Type_3_fonts#Type_1" class="mw-redirect" title="Type 1 and Type 3 fonts">Type 1 fonts</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (July 2011)">citation needed</span></a></i>]</sup></li> <li><a href="/wiki/IEEE_1394" title="IEEE 1394">IEEE 1394</a> (FireWire) audio is not supported.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Hibernation_(computing)" title="Hibernation (computing)">Hibernation</a> is not supported if the RAM is greater than 4<span class="nowrap"> </span>GB.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> This would be resolved by <a href="/wiki/Windows_7" title="Windows 7">Windows 7</a>.</li> <li><a href="/wiki/Extensible_Firmware_Interface" class="mw-redirect" title="Extensible Firmware Interface">EFI</a> and/or <a href="/wiki/UEFI" title="UEFI">UEFI</a> are not supported. A BIOS with <a href="/wiki/Advanced_Configuration_and_Power_Interface" class="mw-redirect" title="Advanced Configuration and Power Interface">Advanced Configuration and Power Interface</a> (ACPI) is required.</li> <li><a href="/wiki/English_language" title="English language">English</a> or <a href="/wiki/Japanese_language" title="Japanese language">Japanese</a> are only provided as native display languages. <a href="/wiki/Chinese_language" title="Chinese language">Chinese</a>, <a href="/wiki/French_language" title="French language">French</a>, <a href="/wiki/German_language" title="German language">German</a>, <a href="/wiki/Italian_language" title="Italian language">Italian</a>, <a href="/wiki/Japanese_language" title="Japanese language">Japanese</a>, <a href="/wiki/Korean_language" title="Korean language">Korean</a>, <a href="/wiki/Spanish_language" title="Spanish language">Spanish</a> and <a href="/wiki/Swedish_language" title="Swedish language">Swedish</a> are available as <a href="/wiki/Multilingual_User_Interface" title="Multilingual User Interface">Multilingual User Interface</a> (MUI) packs for the English version.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Software_compatibility">Software compatibility</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=6" title="Edit section: Software compatibility"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Windows XP Professional x64 Edition uses a technology named <a href="/wiki/WoW64" title="WoW64">Windows-on-Windows 64-bit (WoW64)</a>, which permits the execution of <a href="/wiki/32-bit" class="mw-redirect" title="32-bit">32-bit</a> software. It was first used in <a href="/wiki/Windows_XP_64-bit_Edition" class="mw-redirect" title="Windows XP 64-bit Edition">Windows XP 64-bit Edition</a> (for <a href="/wiki/Itanium" title="Itanium">Itanium</a> architecture). Later, it was adopted for x64 editions of Windows XP and Windows Server 2003. </p><p>Since the x86-64 architecture includes hardware-level support for 32-bit instructions, WoW64 simply switches the process between 32- and 64-bit modes. As a result, x86-64 architecture microprocessors suffer no performance loss when executing 32-bit Windows applications. On the Itanium architecture, WoW64 was required to translate 32-bit x86 instructions into their 64-bit Itanium equivalents—which in some cases were implemented in quite different ways—so that the processor could execute them. All 32-bit processes are shown with *32 in the task manager, while 64-bit processes have no extra text present. </p><p>Although 32-bit applications can be run transparently, the mixing of the two types of code within the same <a href="/wiki/Process_(computing)" title="Process (computing)">process</a> is not allowed. A 64-bit program cannot use a 32-bit <a href="/wiki/Dynamic-link_library" title="Dynamic-link library">dynamic-link library</a> (DLL) and similarly a 32-bit program cannot use a 64-bit DLL. This may lead to the need for library developers to provide both 32-bit and 64-bit binary versions of their libraries. Specifically, 32-bit <a href="/wiki/Shell_extension" class="mw-redirect" title="Shell extension">shell extensions</a> for <a href="/wiki/Windows_Explorer" class="mw-redirect" title="Windows Explorer">Windows Explorer</a> fail to work with 64-bit Windows Explorer. Windows XP x64 Edition ships with both 32-bit and 64-bit versions of Windows Explorer.<sup id="cite_ref-XPx64ShellIssues_21-1" class="reference"><a href="#cite_note-XPx64ShellIssues-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> The 32-bit version can become the default Windows Shell.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> Windows XP x64 Edition also includes both 32-bit and 64-bit versions of <a href="/wiki/Internet_Explorer_6" title="Internet Explorer 6">Internet Explorer 6</a>, so that users can still use <a href="/wiki/Browser_extension" title="Browser extension">browser extensions</a> or <a href="/wiki/ActiveX" title="ActiveX">ActiveX</a> controls that are not available in 64-bit versions. </p><p>Only 64-bit drivers are supported in Windows XP x64 Edition, but 32-bit <a href="/wiki/Codec" title="Codec">codecs</a> are supported as long as the <a href="/wiki/Media_player_(software)" class="mw-redirect" title="Media player (software)">media player</a> that uses them is 32-bit.<sup id="cite_ref-64-bitonly-rel-note_20-1" class="reference"><a href="#cite_note-64-bitonly-rel-note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Installation_of_programs">Installation of programs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=7" title="Edit section: Installation of programs"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>By default, 64-bit (x86-64) Windows programs are installed onto their own folders under <code>C:\Program Files</code>, while 32-bit (x86/IA-32) Windows programs are installed onto their own folders under <code>C:\Program Files (x86)</code>. </p> <div class="mw-heading mw-heading2"><h2 id="Removed_features">Removed features</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=8" title="Edit section: Removed features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some features are not included at all on Windows XP Professional x64 Edition. Most of them were inherited from Windows Server 2003 Service Pack 1 (the version that Windows XP Professional x64 Edition is based on) which included some changes from Windows XP Service Pack 2 for x86: </p> <ul><li><a href="/wiki/NTVDM" class="mw-redirect" title="NTVDM">NTVDM</a> and <a href="/wiki/Windows_on_Windows" title="Windows on Windows">Windows on Windows</a> were removed, so <a href="/wiki/16-bit" class="mw-redirect" title="16-bit">16-bit</a> Windows applications or native <a href="/wiki/MS-DOS" title="MS-DOS">MS-DOS</a> applications cannot run.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> A similar case happened with all versions of Windows XP for <a href="/wiki/Itanium" title="Itanium">Itanium</a>. Some old 32-bit programs use 16-bit installers which do not run; however, replacements for 16-bit installers such as ACME Setup versions 2.6, 3.0, 3.01, 3.1 and <a href="/wiki/InstallShield" title="InstallShield">InstallShield</a> 5.x are hardcoded into <a href="/wiki/WoW64" title="WoW64">WoW64</a> to mitigate this issue. This is true for later 64-bit versions of Windows.<sup id="cite_ref-64-bitonly-rel-note_20-2" class="reference"><a href="#cite_note-64-bitonly-rel-note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/COMMAND.COM" title="COMMAND.COM">COMMAND.COM</a>, which is a command interpreter exclusive to <a href="/wiki/MS-DOS" title="MS-DOS">MS-DOS</a> and <a href="/wiki/Windows_9x" title="Windows 9x">Windows 9x</a>, is no longer included.</li> <li><a href="/wiki/Program_Manager" title="Program Manager">Program Manager</a> was removed and replaced with Windows Explorer. The executable is still present, but it was replaced with a <a href="/wiki/Method_stub" title="Method stub">compatibility stub</a> that redirects to Explorer. The executable itself would not be removed entirely until <a href="/wiki/Windows_Vista" title="Windows Vista">Windows Vista</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2024)">citation needed</span></a></i>]</sup></li> <li><a href="/wiki/Win32_console" class="mw-redirect" title="Win32 console">Win32 console</a> programs (including <a href="/wiki/Command_Prompt" class="mw-redirect" title="Command Prompt">Command Prompt</a>) no longer loads in full-screen. This also applies to later versions of Windows.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (December 2014)">citation needed</span></a></i>]</sup></li> <li><i>Media Bar</i>, which replaced the <i>Radio Toolbar</i> in <a href="/wiki/Internet_Explorer_6" title="Internet Explorer 6">Internet Explorer 6</a>,<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> was removed.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup></li> <li>The Web Extender Client component for Web Folders (WebDAV) was not included.<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup></li> <li>Spell checking in <a href="/wiki/Outlook_Express" title="Outlook Express">Outlook Express</a> was removed.<sup id="cite_ref-XPx64FeatureChanges_30-0" class="reference"><a href="#cite_note-XPx64FeatureChanges-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Service_packs">Service packs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=9" title="Edit section: Service packs"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The RTM version of Windows XP Professional x64 Edition was built from the Windows Server 2003 Service Pack 1 codebase.<sup id="cite_ref-XPx64Description_5-1" class="reference"><a href="#cite_note-XPx64Description-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Because Windows XP Professional x64 Edition comes from a different codebase than 32-bit Windows XP, its service packs are also developed separately.<sup id="cite_ref-NT5x64SP2_31-0" class="reference"><a href="#cite_note-NT5x64SP2-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> For the same reason, Service Pack 2 for Windows XP x64 Edition, released on March 13, 2007, is not the same as Service Pack 2 for 32-bit versions of Windows XP.<sup id="cite_ref-NT5x64SP2_31-1" class="reference"><a href="#cite_note-NT5x64SP2-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> In fact, due to the earlier release date of the 32-bit version, many of the key features introduced by Service Pack 2 for 32-bit (x86) editions of Windows XP were already present in the RTM version of its x64 counterpart.<sup id="cite_ref-XPx64Description_5-2" class="reference"><a href="#cite_note-XPx64Description-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Service Pack 2 is the last released service pack for Windows XP Professional x64 Edition. </p> <div class="mw-heading mw-heading2"><h2 id="Upgrade">Upgrade</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=10" title="Edit section: Upgrade"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A machine running Windows XP Professional x64 Edition cannot be directly upgraded to Windows Vista because the 64-bit Vista DVD mistakenly recognizes XP x64 as a 32-bit system. Windows XP x64 does qualify the customer to use an upgrade copy of Windows Vista or Windows 7, however it must be installed as a clean install. Despite this, there is a workaround available via third-party tools to make upgrading from XP x64 to Windows Vista possible.<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> </p><p>The last version of <a href="/wiki/Microsoft_Office" title="Microsoft Office">Microsoft Office</a> to be officially compatible with Windows XP Professional x64 Edition is <a href="/wiki/Microsoft_Office_2007" title="Microsoft Office 2007">Office 2007</a>, however <a href="/wiki/Microsoft_Office_2010" title="Microsoft Office 2010">Office 2010</a> can be unofficially installed by disguising the Windows version using Application Verifier. The last version of <a href="/wiki/Internet_Explorer" title="Internet Explorer">Internet Explorer</a> compatible with Windows XP Professional x64 Edition is <a href="/wiki/Internet_Explorer_8" title="Internet Explorer 8">Internet Explorer 8</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Support_lifecycle">Support lifecycle</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=11" title="Edit section: Support lifecycle"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Windows XP Professional x64 Edition follows the same support lifecycles as with all other versions of Windows XP. On April 14, 2009, Windows XP Professional x64 Edition's mainstream support expired and the extended support phase began. During the extended support phase, Microsoft continued to provide security updates; however, free technical support, warranty claims, and design changes are no longer being offered.<sup id="cite_ref-lifecycle_33-0" class="reference"><a href="#cite_note-lifecycle-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> Extended support lasted until April 8, 2014, in line with all other Windows XP editions.<sup id="cite_ref-lifecycle_33-1" class="reference"><a href="#cite_note-lifecycle-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> After this date, no more security patches or support information are offered. </p><p>Although Windows XP Professional x64 Edition is unsupported, Microsoft released an emergency security patch in May 2017 for the OS as well as other unsupported versions of Windows (including <a href="/wiki/Windows_Server_2003" title="Windows Server 2003">Windows Server 2003</a>, <a href="/wiki/Windows_Vista" title="Windows Vista">Windows Vista</a> and <a href="/wiki/Windows_7" title="Windows 7">Windows 7</a> RTM without a service pack), to address a vulnerability that was being leveraged by the <a href="/wiki/WannaCry_ransomware_attack" title="WannaCry ransomware attack">WannaCry ransomware attack</a>.<sup id="cite_ref-verge-highlyunusual_34-0" class="reference"><a href="#cite_note-verge-highlyunusual-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ms-wannacrypatch_35-0" class="reference"><a href="#cite_note-ms-wannacrypatch-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> In May 2019, an emergency patch was released to address a <a href="/wiki/BlueKeep" title="BlueKeep">critical code execution vulnerability</a> in <a href="/wiki/Remote_Desktop_Services" title="Remote Desktop Services">Remote Desktop Services</a> which can be exploited in a similar way as the WannaCry vulnerability.<sup id="cite_ref-verge-wannacrylike_36-0" class="reference"><a href="#cite_note-verge-wannacrylike-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-37" class="reference"><a href="#cite_note-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </p><p>Microsoft announced in July 2019 that the Microsoft Internet Games services on Windows XP and Windows Me would end on July 31, 2019 (and for Windows 7 on January 22, 2020).<sup id="cite_ref-38" class="reference"><a href="#cite_note-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> Others, such as <a href="/wiki/Steam_(service)" title="Steam (service)">Steam</a>, had done the same, ending support for Windows XP and Windows Vista in January 2019.<sup id="cite_ref-39" class="reference"><a href="#cite_note-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> </p><p>In 2020, Microsoft announced that it would disable the Windows Update service for SHA-1 endpoints. Since Windows XP Professional x64 Edition did not get an update for SHA-2, Windows Update Services are no longer available on the OS as of late July 2020.<sup id="cite_ref-40" class="reference"><a href="#cite_note-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> However, as of April 2021, the old updates for Windows XP Professional x64 Edition are still available on the <a href="/wiki/Microsoft_Update_Catalog" title="Microsoft Update Catalog">Microsoft Update Catalog</a>.<sup id="cite_ref-41" class="reference"><a href="#cite_note-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> </p> <div style="overflow:auto"> <div class="timeline-wrapper"><map name="timeline_bz5qrmi1zyklho5f6orhny8q6uv48ho"></map><img usemap="#timeline_bz5qrmi1zyklho5f6orhny8q6uv48ho" src="//upload.wikimedia.org/wikipedia/en/timeline/bz5qrmi1zyklho5f6orhny8q6uv48ho.png" /></div> </div> <p><br /> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=12" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-release-date-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-release-date_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-release-date_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation pressrelease cs1"><a rel="nofollow" class="external text" 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May 14, 2019.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Description+of+the+security+update+for+the+remote+code+execution+vulnerability+in+Windows+XP+Professional+x64+Edition+SP2&rft.pub=Microsoft&rft.date=2019-05-14&rft_id=https%3A%2F%2Fsupport.microsoft.com%2Fhelp%2F4500331&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-lifecycleXPx64-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-lifecycleXPx64_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-lifecycleXPx64_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support2.microsoft.com/lifecycle/search/default.aspx?sort=PN&alpha=Microsoft+Windows+XP+Professional+x64+Edition&Filter=FilterNO">"Microsoft Product Lifecycle: Microsoft Windows XP Professional x64 Edition"</a>. <i>Support</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a><span class="reference-accessdate">. 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October 11, 2007<span class="reference-accessdate">. Retrieved <span class="nowrap">January 12,</span> 2011</span>. <q>The x64-based versions are based on the Windows Server 2003 code tree. Service and support activities for these versions use the Windows Server 2003 tree and do not use the Windows XP client tree.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=A+description+of+the+x64-based+versions+of+Windows+Server+2003+and+of+Windows+XP+Professional+x64+Edition+%28Revision+3.8%29&rft.date=2007-10-11&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F888733&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOiaga2007" class="citation web cs1">Oiaga, Marius (December 14, 2007). <a rel="nofollow" class="external text" href="http://news.softpedia.com/news/64-Bit-Windows-XP-Service-Pack-3-73982.shtml">"64-Bit Windows XP Service Pack 3? 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Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=News+Center&rft.atitle=Microsoft+Announces+Beta+Version+of+Windows+XP+64-Bit+Edition+For+64-Bit+Extended+Systems&rft.date=2002-09-23&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fpresspass%2Fpress%2F2003%2Fsep03%2F09-23athlon64betapr.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/888732">"Processor and memory capabilities of Windows XP Professional x64 Edition and of the x64-based versions of Windows Server 2003"</a>. <i>Support</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. 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Retrieved <span class="nowrap">September 8,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=Processor+and+memory+capabilities+of+Windows+XP+Professional+x64+Edition+and+of+the+x64-based+versions+of+Windows+Server+2003&rft.date=2010-12-20&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F888732&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text">Up to: 64 cores, 64 threads if ratio of core count and thread count is 1:1; 32 cores, 64 threads if ratio of core count and thread count is 1:2.</span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/whdc/device/storage/GPT_FAQ.mspx#ELD">"Windows XP Disk Support: Windows and GPT FAQ"</a>. <i>Dev Center – Hardware</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a><span class="reference-accessdate">. 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Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=TechNet&rft.atitle=Remote+Desktop+for+Windows+XP+Professional+x64+Edition&rft.date=2009-09-11&rft_id=https%3A%2F%2Ftechnet.microsoft.com%2Fen-us%2Flibrary%2Fbb490863.aspx%23EEAA&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://technet.microsoft.com/en-us/library/bb490863.aspx#EIAA">"Files and Settings Transfer Wizard for Windows XP Professional x64 Edition"</a>. <i><a href="/wiki/Microsoft_TechNet" title="Microsoft TechNet">TechNet</a></i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. September 11, 2009<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=TechNet&rft.atitle=Files+and+Settings+Transfer+Wizard+for+Windows+XP+Professional+x64+Edition&rft.date=2009-09-11&rft_id=https%3A%2F%2Ftechnet.microsoft.com%2Fen-us%2Flibrary%2Fbb490863.aspx%23EIAA&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20130301064455/http://download.microsoft.com/download/7/5/7/757a5c5c-1ad2-4774-9ffa-ec78052c42fb/scaling.doc">"Windows Server 2003 Kernel Scaling Improvements"</a>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. Archived from <a rel="nofollow" class="external text" href="http://download.microsoft.com/download/7/5/7/757a5c5c-1ad2-4774-9ffa-ec78052c42fb/scaling.doc">the original</a> on March 1, 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Windows+Server+2003+Kernel+Scaling+Improvements&rft.pub=Microsoft&rft_id=http%3A%2F%2Fdownload.microsoft.com%2Fdownload%2F7%2F5%2F7%2F757a5c5c-1ad2-4774-9ffa-ec78052c42fb%2Fscaling.doc&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/servers/64bit/x64/benefits.mspx">"The Benefits of x64 Technology"</a>. <i>microsoft.com</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a><span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=microsoft.com&rft.atitle=The+Benefits+of+x64+Technology&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fservers%2F64bit%2Fx64%2Fbenefits.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-64-bitonly-rel-note-20"><span class="mw-cite-backlink">^ <a href="#cite_ref-64-bitonly-rel-note_20-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-64-bitonly-rel-note_20-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-64-bitonly-rel-note_20-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/306819">"Release Notes for Windows XP Contained in the Relnotes.htm File"</a>. <i>Support</i>. Microsoft. January 9, 2006<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=Release+Notes+for+Windows+XP+Contained+in+the+Relnotes.htm+File&rft.date=2006-01-09&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F306819&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-XPx64ShellIssues-21"><span class="mw-cite-backlink">^ <a href="#cite_ref-XPx64ShellIssues_21-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-XPx64ShellIssues_21-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/895561">"Some Windows Explorer extensions and some Control Panel items are not displayed on computers that are running an x64-based version of Windows"</a>. <i>Support</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. February 4, 2008<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=Some+Windows+Explorer+extensions+and+some+Control+Panel+items+are+not+displayed+on+computers+that+are+running+an+x64-based+version+of+Windows&rft.date=2008-02-04&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F895561&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20130525093404/http://extended64.com/blogs/bhpaddock/archive/2005/05/22/539.aspx">"How to run the 32-bit Explorer shell on Windows x64"</a>. Extended64.com. Archived from <a rel="nofollow" class="external text" href="http://extended64.com/blogs/bhpaddock/archive/2005/05/22/539.aspx">the original</a> on May 25, 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=How+to+run+the+32-bit+Explorer+shell+on+Windows+x64&rft.pub=Extended64.com&rft_id=http%3A%2F%2Fextended64.com%2Fblogs%2Fbhpaddock%2Farchive%2F2005%2F05%2F22%2F539.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://technet.microsoft.com/en-us/library/bb490863.aspx#EAAA">"Changes to Functionality in Microsoft Windows XP Professional x64 Edition"</a>. <i><a href="/wiki/Microsoft_TechNet" title="Microsoft TechNet">TechNet</a></i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. September 11, 2009. Appendix B: Features Not Supported in Windows XP Professional x64 Edition<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=TechNet&rft.atitle=Changes+to+Functionality+in+Microsoft+Windows+XP+Professional+x64+Edition&rft.pages=Appendix+B%3A+Features+Not+Supported+in+Windows+XP+Professional+x64+Edition&rft.date=2009-09-11&rft_id=https%3A%2F%2Ftechnet.microsoft.com%2Fen-us%2Flibrary%2Fbb490863.aspx%23EAAA&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://support.microsoft.com/en-us/kb/888575">"You cannot put a computer that has more than 4<span class="nowrap"> </span>GB of memory into hibernation in Windows XP, in Windows Server 2003, in Windows Vista, or in Windows Server 2008"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160407143534/https://support.microsoft.com/en-us/kb/888575/">Archived</a> from the original on April 7, 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">March 28,</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=You+cannot+put+a+computer+that+has+more+than+4%3Cspan+class%3D%22nowrap%22%3E+%3C%2Fspan%3EGB+of+memory+into+hibernation+in+Windows+XP%2C+in+Windows+Server+2003%2C+in+Windows+Vista%2C+or+in+Windows+Server+2008.&rft_id=https%3A%2F%2Fsupport.microsoft.com%2Fen-us%2Fkb%2F888575&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPaddock2005" class="citation web cs1">Paddock, Brandon (May 22, 2005). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130525093404/http://extended64.com/blogs/bhpaddock/archive/2005/05/22/539.aspx">"How to run the 32-bit Explorer shell on Windows x64"</a>. <i>Extended64.com</i>. Archived from <a rel="nofollow" class="external text" href="http://extended64.com/blogs/bhpaddock/archive/2005/05/22/539.aspx">the original</a> on May 25, 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Extended64.com&rft.atitle=How+to+run+the+32-bit+Explorer+shell+on+Windows+x64&rft.date=2005-05-22&rft.aulast=Paddock&rft.aufirst=Brandon&rft_id=http%3A%2F%2Fextended64.com%2Fblogs%2Fbhpaddock%2Farchive%2F2005%2F05%2F22%2F539.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/896458">"64-bit versions of Windows do not support 16-bit components, 16-bit processes, or 16-bit applications"</a>. <i>Support</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. September 11, 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">April 19,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=64-bit+versions+of+Windows+do+not+support+16-bit+components%2C+16-bit+processes%2C+or+16-bit+applications&rft.date=2011-09-11&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F896458&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080309210019/http://support.microsoft.com/kb/303130">"The Radio Toolbar Is Unavailable in Internet Explorer 6"</a>. <i>Support</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. January 31, 2007. Archived from <a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/303130">the original</a> on March 9, 2008<span class="reference-accessdate">. Retrieved <span class="nowrap">November 8,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=The+Radio+Toolbar+Is+Unavailable+in+Internet+Explorer+6&rft.date=2007-01-31&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F303130&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-28">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://msdn.microsoft.com/en-us/library/ms533100.aspx">"Media Bar"</a>. <i><a href="/wiki/MSDN" class="mw-redirect" title="MSDN">MSDN</a></i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170211160218/https://msdn.microsoft.com/en-us/library/ms533100.aspx">Archived</a> from the original on February 11, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">November 8,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=MSDN&rft.atitle=Media+Bar&rft_id=http%3A%2F%2Fmsdn.microsoft.com%2Fen-us%2Flibrary%2Fms533100.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-29">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/888123">"You cannot connect to a Web folder from a Windows Server 2003 or Windows XP x64 computer"</a>. <i>Support</i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a><span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=You+cannot+connect+to+a+Web+folder+from+a+Windows+Server+2003+or+Windows+XP+x64+computer&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F888123&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-XPx64FeatureChanges-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-XPx64FeatureChanges_30-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://technet.microsoft.com/en-us/library/bb490863.aspx#EGAA">"Changes to Functionality in Microsoft Windows XP Professional x64 Edition"</a>. <i><a href="/wiki/Microsoft_TechNet" title="Microsoft TechNet">TechNet</a></i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. September 11, 2009. Outlook Express for Windows XP Professional x64 Edition<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=TechNet&rft.atitle=Changes+to+Functionality+in+Microsoft+Windows+XP+Professional+x64+Edition&rft.pages=Outlook+Express+for+Windows+XP+Professional+x64+Edition&rft.date=2009-09-11&rft_id=https%3A%2F%2Ftechnet.microsoft.com%2Fen-us%2Flibrary%2Fbb490863.aspx%23EGAA&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-NT5x64SP2-31"><span class="mw-cite-backlink">^ <a href="#cite_ref-NT5x64SP2_31-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-NT5x64SP2_31-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20140202100928/https://technet.microsoft.com/en-us/windowsserver/bb294403">"Windows Server 2003 & Windows XP x64 Service Pack 2 Overview"</a>. <i><a href="/wiki/Microsoft_TechNet" title="Microsoft TechNet">TechNet</a></i>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>. January 25, 2011. Archived from <a rel="nofollow" class="external text" href="https://technet.microsoft.com/en-us/windowsserver/bb294403">the original</a> on February 2, 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">June 7,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=TechNet&rft.atitle=Windows+Server+2003+%26+Windows+XP+x64+Service+Pack+2+Overview&rft.date=2011-01-25&rft_id=https%3A%2F%2Ftechnet.microsoft.com%2Fen-us%2Fwindowsserver%2Fbb294403&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-32">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFcolaWin" class="citation audio-visual cs1">colaWin. <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=ko5y9WAkdas"><i>Upgrade from Windows XP to Vista,but it is in 64 bit version</i></a>. <i>YouTube</i><span class="reference-accessdate">. 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Retrieved <span class="nowrap">April 11,</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Support&rft.atitle=Microsoft+Support+Lifecycle&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Flifecycle%2F%3Fc2%3D1163&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-verge-highlyunusual-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-verge-highlyunusual_34-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.theverge.com/2017/5/13/15635006/microsoft-windows-xp-security-patch-wannacry-ransomware-attack">"Microsoft issues 'highly unusual' Windows XP patch to prevent massive ransomware attack"</a>. <i>The Verge</i>. Vox Media. May 13, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">May 13,</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Verge&rft.atitle=Microsoft+issues+%27highly+unusual%27+Windows+XP+patch+to+prevent+massive+ransomware+attack&rft.date=2017-05-13&rft_id=https%3A%2F%2Fwww.theverge.com%2F2017%2F5%2F13%2F15635006%2Fmicrosoft-windows-xp-security-patch-wannacry-ransomware-attack&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-ms-wannacrypatch-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-ms-wannacrypatch_35-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/">"Customer Guidance for WannaCrypt attacks"</a>. <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a><span class="reference-accessdate">. Retrieved <span class="nowrap">May 13,</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Customer+Guidance+for+WannaCrypt+attacks&rft.pub=Microsoft&rft_id=https%3A%2F%2Fblogs.technet.microsoft.com%2Fmsrc%2F2017%2F05%2F12%2Fcustomer-guidance-for-wannacrypt-attacks%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-verge-wannacrylike-36"><span class="mw-cite-backlink"><b><a href="#cite_ref-verge-wannacrylike_36-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWarren2019" class="citation web cs1">Warren, Tom (May 14, 2019). <a rel="nofollow" class="external text" href="https://www.theverge.com/2019/5/14/18623565/microsoft-windows-xp-remote-desktop-services-worm-security-patches">"Microsoft warns of major WannaCry-like Windows security exploit, releases XP patches"</a>. <i>The Verge</i>. Vox Media. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190902162957/https://www.theverge.com/2019/5/14/18623565/microsoft-windows-xp-remote-desktop-services-worm-security-patches">Archived</a> from the original on September 2, 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">May 16,</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Verge&rft.atitle=Microsoft+warns+of+major+WannaCry-like+Windows+security+exploit%2C+releases+XP+patches&rft.date=2019-05-14&rft.aulast=Warren&rft.aufirst=Tom&rft_id=https%3A%2F%2Fwww.theverge.com%2F2019%2F5%2F14%2F18623565%2Fmicrosoft-windows-xp-remote-desktop-services-worm-security-patches&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-37"><span class="mw-cite-backlink"><b><a href="#cite_ref-37">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blogs.technet.microsoft.com/msrc/2019/05/14/prevent-a-worm-by-updating-remote-desktop-services-cve-2019-0708/">"Prevent a worm by updating Remote Desktop Services (CVE-2019-0708)"</a>. <i>MSRC Blog</i>. May 14, 2019. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190514210409/https://blogs.technet.microsoft.com/msrc/2019/05/14/prevent-a-worm-by-updating-remote-desktop-services-cve-2019-0708/">Archived</a> from the original on May 14, 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">May 16,</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=MSRC+Blog&rft.atitle=Prevent+a+worm+by+updating+Remote+Desktop+Services+%28CVE-2019-0708%29&rft.date=2019-05-14&rft_id=https%3A%2F%2Fblogs.technet.microsoft.com%2Fmsrc%2F2019%2F05%2F14%2Fprevent-a-worm-by-updating-remote-desktop-services-cve-2019-0708%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-38"><span class="mw-cite-backlink"><b><a href="#cite_ref-38">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://answers.microsoft.com/en-us/windows/forum/all/farewell-to-microsoft-internet-games-on-windows-xp/035d5144-6c1b-49bb-b3d5-37f6355fec39?auth=1">"Farewell to Microsoft Internet Games on Windows XP, Windows ME, and Windows 7"</a>. <i>answers.microsoft.com</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190714150805/https://answers.microsoft.com/en-us/windows/forum/all/farewell-to-microsoft-internet-games-on-windows-xp/035d5144-6c1b-49bb-b3d5-37f6355fec39?auth=1">Archived</a> from the original on July 14, 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">August 4,</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=answers.microsoft.com&rft.atitle=Farewell+to+Microsoft+Internet+Games+on+Windows+XP%2C+Windows+ME%2C+and+Windows+7&rft_id=https%3A%2F%2Fanswers.microsoft.com%2Fen-us%2Fwindows%2Fforum%2Fall%2Ffarewell-to-microsoft-internet-games-on-windows-xp%2F035d5144-6c1b-49bb-b3d5-37f6355fec39%3Fauth%3D1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-39"><span class="mw-cite-backlink"><b><a href="#cite_ref-39">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://support.steampowered.com/kb_article.php?ref=1558-AFCM-4577">"Windows XP and Windows Vista Support – Steam – Knowledge Base – Steam Support"</a>. <i>support.steampowered.com</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190812221829/https://support.steampowered.com/kb_article.php?ref=1558-AFCM-4577">Archived</a> from the original on August 12, 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">August 4,</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=support.steampowered.com&rft.atitle=Windows+XP+and+Windows+Vista+Support+%E2%80%93+Steam+%E2%80%93+Knowledge+Base+%E2%80%93+Steam+Support&rft_id=https%3A%2F%2Fsupport.steampowered.com%2Fkb_article.php%3Fref%3D1558-AFCM-4577&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-40"><span class="mw-cite-backlink"><b><a href="#cite_ref-40">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://support.microsoft.com/en-us/topic/windows-update-sha-1-based-endpoints-discontinued-for-older-windows-devices-10b58bd9-5ba2-b23d-498b-139ce5c709af">"Windows Update SHA-1 based endpoints discontinued for older Windows devices"</a>. <i>support.microsoft.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">April 6,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=support.microsoft.com&rft.atitle=Windows+Update+SHA-1+based+endpoints+discontinued+for+older+Windows+devices&rft_id=https%3A%2F%2Fsupport.microsoft.com%2Fen-us%2Ftopic%2Fwindows-update-sha-1-based-endpoints-discontinued-for-older-windows-devices-10b58bd9-5ba2-b23d-498b-139ce5c709af&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> <li id="cite_note-41"><span class="mw-cite-backlink"><b><a href="#cite_ref-41">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.catalog.update.microsoft.com/Search.aspx?q=windows%20server%202003">"Microsoft Update Catalog"</a>. <i>www.catalog.update.microsoft.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">April 6,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.catalog.update.microsoft.com&rft.atitle=Microsoft+Update+Catalog&rft_id=https%3A%2F%2Fwww.catalog.update.microsoft.com%2FSearch.aspx%3Fq%3Dwindows%2520server%25202003&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=13" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin" style=""> <ol><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.microsoft.com/windowsserver2003/techinfo/overview/x64benefits.mspx">"Benefits of Microsoft Windows x64 Editions"</a>. Microsoft Corporation. February 8, 2006<span class="reference-accessdate">. Retrieved <span class="nowrap">January 12,</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Benefits+of+Microsoft+Windows+x64+Editions&rft.pub=Microsoft+Corporation&rft.date=2006-02-08&rft_id=http%3A%2F%2Fwww.microsoft.com%2Fwindowsserver2003%2Ftechinfo%2Foverview%2Fx64benefits.mspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDa_Costa2006" class="citation web cs1">Da Costa, Andre (April 25, 2006). <a rel="nofollow" class="external text" href="http://www.activewin.com/articles/2006/8.shtml">"Microsoft Windows XP x64 Edition: Year in Review"</a>. <i>ActiveWin.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">January 12,</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ActiveWin.com&rft.atitle=Microsoft+Windows+XP+x64+Edition%3A+Year+in+Review&rft.date=2006-04-25&rft.aulast=Da+Costa&rft.aufirst=Andre&rft_id=http%3A%2F%2Fwww.activewin.com%2Farticles%2F2006%2F8.shtml&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.microsoft.com/kb/914962">"List of updates in Windows Server 2003 Service Pack 2 (Revision 15.2)"</a>. <i>Microsoft Support</i>. Microsoft Corporation. February 27, 2009<span class="reference-accessdate">. Retrieved <span class="nowrap">January 12,</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft+Support&rft.atitle=List+of+updates+in+Windows+Server+2003+Service+Pack+2+%28Revision+15.2%29&rft.date=2009-02-27&rft_id=http%3A%2F%2Fsupport.microsoft.com%2Fkb%2F914962&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWindows+XP+Professional+x64+Edition" class="Z3988"></span></li></ol> </div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Windows_XP_Professional_x64_Edition&action=edit&section=14" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" 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navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_95" title="Windows 95">95</a></li> <li><a href="/wiki/Windows_98" title="Windows 98">98</a></li> <li><a href="/wiki/Windows_Me" title="Windows Me">Me</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Windows_NT" title="Windows NT">Windows NT</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Base <br /> releases</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_NT_3.1" title="Windows NT 3.1">NT 3.1</a></li> <li><a href="/wiki/Windows_NT_3.5" title="Windows NT 3.5">NT 3.5</a></li> <li><a href="/wiki/Windows_NT_3.51" title="Windows NT 3.51">NT 3.51</a></li> <li><a href="/wiki/Windows_NT_4.0" title="Windows NT 4.0">NT 4.0</a></li> <li><a href="/wiki/Windows_2000" title="Windows 2000">2000</a></li> <li><a href="/wiki/Windows_XP" title="Windows XP">XP</a> <ul><li><a class="mw-selflink selflink">Pro x64</a></li> <li><a href="/wiki/Windows_XP_Media_Center_Edition" title="Windows XP Media Center Edition">Media Center</a></li></ul></li> <li><a href="/wiki/Windows_Vista" title="Windows Vista">Vista</a></li> <li><a href="/wiki/Windows_7" title="Windows 7">7</a></li> <li><a href="/wiki/Windows_8" title="Windows 8">8</a> / <a href="/wiki/Windows_8.1" title="Windows 8.1">8.1</a></li> <li><a href="/wiki/Windows_10" title="Windows 10">10</a></li> <li><a href="/wiki/Windows_11" title="Windows 11">11</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Windows_Server" title="Windows Server">Windows <br /> Server</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_Server_2003" title="Windows Server 2003">Server 2003</a> <ul><li><a href="/wiki/Windows_Home_Server" title="Windows Home Server">Home Server</a></li></ul></li> <li><a href="/wiki/Windows_Server_2008" title="Windows Server 2008">Server 2008</a> <ul><li><a href="/wiki/Windows_Essential_Business_Server_2008" title="Windows Essential Business Server 2008">EBS 2008</a></li> <li><a href="/wiki/Windows_HPC_Server_2008" title="Windows HPC Server 2008">HPC Server 2008</a></li></ul></li> <li><a href="/wiki/Windows_Server_2008_R2" title="Windows Server 2008 R2">Server 2008 R2</a> <ul><li><a href="/wiki/Windows_Home_Server_2011" title="Windows Home Server 2011">Home Server 2011</a></li></ul></li> <li><a href="/wiki/Windows_Server_2012" title="Windows Server 2012">Server 2012</a></li> <li><a href="/wiki/Windows_Server_2012_R2" title="Windows Server 2012 R2">Server 2012 R2</a></li> <li><a href="/wiki/Windows_Server_2016" title="Windows Server 2016">Server 2016</a></li> <li><a href="/wiki/Windows_Server_2019" title="Windows Server 2019">Server 2019</a></li> <li><a href="/wiki/Windows_Server_2022" title="Windows Server 2022">Server 2022</a></li> <li><a href="/wiki/Windows_Server_2025" title="Windows Server 2025">Server 2025</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other <br /> releases</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_Fundamentals_for_Legacy_PCs" title="Windows Fundamentals for Legacy PCs">Fundamentals for Legacy PCs</a></li> <li><a href="/wiki/Windows_RT" title="Windows RT">RT</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Specialized</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_Preinstallation_Environment" title="Windows Preinstallation Environment">Preinstallation Environment</a></li> <li><a href="/wiki/Windows_MultiPoint_Server" title="Windows MultiPoint Server">MultiPoint Server</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Windows_IoT" title="Windows IoT">Windows <br /> Embedded / <br /> Windows IoT</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Windows_Embedded_Compact" title="Windows Embedded Compact">Embedded <br /> Compact</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_CE_5.0" title="Windows CE 5.0">CE 5.0</a></li> <li><a href="/wiki/Windows_Embedded_CE_6.0" title="Windows Embedded CE 6.0">Embedded CE 6.0</a></li> <li><a href="/wiki/Windows_Embedded_Compact_7" title="Windows Embedded Compact 7">Embedded Compact 7</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_Embedded_Automotive" title="Windows Embedded Automotive">Embedded Automotive</a></li> <li><a href="/wiki/Windows_Embedded_Industry" title="Windows Embedded Industry">Embedded Industry</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Windows_Mobile" title="Windows Mobile">Windows Mobile</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pocket_PC_2000" title="Pocket PC 2000">Pocket PC 2000</a></li> <li><a href="/wiki/Pocket_PC_2002" title="Pocket PC 2002">Pocket PC 2002</a></li> <li><a href="/wiki/Windows_Mobile_2003" title="Windows Mobile 2003">Mobile 2003</a></li> <li><a href="/wiki/Windows_Mobile_5.0" title="Windows Mobile 5.0">Mobile 5.0</a></li> <li><a href="/wiki/Windows_Mobile_6.0" title="Windows Mobile 6.0">Mobile 6.0</a></li> <li><a href="/wiki/Windows_Mobile_6.1" title="Windows Mobile 6.1">Mobile 6.1</a></li> <li><a href="/wiki/Windows_Mobile_6.5" title="Windows Mobile 6.5">Mobile 6.5</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Windows_Phone" title="Windows Phone">Windows Phone</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Windows_Phone_7" title="Windows Phone 7">Phone 7</a></li> <li><a href="/wiki/Windows_Phone_8" title="Windows Phone 8">Phone 8</a></li> <li><a href="/wiki/Windows_Phone_8.1" title="Windows Phone 8.1">Phone 8.1</a></li> <li><a href="/wiki/Windows_10_Mobile" title="Windows 10 Mobile">10 Mobile</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Cancelled</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cairo_(operating_system)" title="Cairo (operating system)">Cairo</a></li> <li><a href="/wiki/Windows_Nashville" title="Windows Nashville">Nashville</a></li> <li><a href="/wiki/Windows_Neptune" title="Windows Neptune">Neptune</a></li> <li><a href="/wiki/Windows_Odyssey" title="Windows Odyssey">Odyssey</a></li> <li><a href="/wiki/Windows_Polaris" class="mw-redirect" title="Windows Polaris">Polaris</a></li> <li><a href="/wiki/Windows_10X" title="Windows 10X">10X</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Development <ul><li><a href="/wiki/Development_of_Windows_95" title="Development of Windows 95">95</a></li> <li><a href="/wiki/Development_of_Windows_XP" title="Development of Windows XP">XP</a></li> <li><a href="/wiki/Development_of_Windows_Vista" title="Development of Windows Vista">Vista</a></li></ul></li> <li>Editions <ul><li><a href="/wiki/Windows_XP_editions" title="Windows XP editions">XP</a></li> <li><a href="/wiki/Windows_Vista_editions" title="Windows Vista editions">Vista</a></li> <li><a href="/wiki/Windows_7_editions" title="Windows 7 editions">7</a></li> <li><a href="/wiki/Windows_8_editions" title="Windows 8 editions">8</a></li> <li><a href="/wiki/Windows_10_editions" title="Windows 10 editions">10</a></li> <li><a href="/wiki/Windows_11_editions" class="mw-redirect" title="Windows 11 editions">11</a></li></ul></li> <li>New features <ul><li><a href="/wiki/Features_new_to_Windows_XP" title="Features new to Windows XP">XP</a></li> <li><a href="/wiki/Features_new_to_Windows_Vista" title="Features new to Windows Vista">Vista</a></li> <li><a href="/wiki/Features_new_to_Windows_7" title="Features new to Windows 7">7</a></li> <li><a href="/wiki/Features_new_to_Windows_8" title="Features new to Windows 8">8</a></li> <li><a href="/wiki/Features_new_to_Windows_10" title="Features new to Windows 10">10</a></li> <li><a href="/wiki/Features_new_to_Windows_11" title="Features new to Windows 11">11</a></li></ul></li> <li>Removed features <ul><li><a href="/wiki/List_of_features_removed_in_Windows_XP" title="List of features removed in Windows XP">XP</a></li> <li><a href="/wiki/List_of_features_removed_in_Windows_Vista" title="List of features removed in Windows Vista">Vista</a></li> <li><a href="/wiki/List_of_features_removed_in_Windows_7" title="List of features removed in Windows 7">7</a></li> <li><a href="/wiki/List_of_features_removed_in_Windows_8" title="List of features removed in Windows 8">8</a></li> <li><a href="/wiki/List_of_features_removed_in_Windows_10" title="List of features removed in Windows 10">10</a></li> <li><a href="/wiki/List_of_features_removed_in_Windows_11" title="List of features removed in Windows 11">11</a></li></ul></li> <li><a href="/wiki/Microsoft_Windows_version_history" title="Microsoft Windows version history">Version history</a> <ul><li><a href="/wiki/Windows_Phone_version_history" title="Windows Phone version history">Phone</a></li> <li><a href="/wiki/Windows_10_version_history" title="Windows 10 version history">10</a></li> <li><a href="/wiki/Windows_10_Mobile_version_history" title="Windows 10 Mobile version history">10 Mobile</a></li> <li><a href="/wiki/Windows_11_version_history" title="Windows 11 version history">11</a></li></ul></li> <li><a href="/wiki/Comparison_of_Microsoft_Windows_versions" title="Comparison of Microsoft Windows versions">Version comparison</a> <ul><li><a href="/wiki/Comparison_of_Windows_Vista_and_Windows_XP" title="Comparison of Windows Vista and Windows XP">Vista and XP</a></li></ul></li> <li><a href="/wiki/Criticism_of_Microsoft_Windows" title="Criticism of Microsoft Windows">Criticism</a> <ul><li><a href="/wiki/Criticism_of_Windows_XP" title="Criticism of Windows XP">XP</a></li> <li><a href="/wiki/Criticism_of_Windows_Vista" title="Criticism of Windows Vista">Vista</a></li> <li><a href="/wiki/Criticism_of_Windows_10" title="Criticism of Windows 10">10</a></li></ul></li> <li><a href="/wiki/Windows_for_Pen_Computing" title="Windows for Pen Computing">Windows for Pen Computing</a></li> <li><a href="/wiki/Microsoft_Plus!" title="Microsoft Plus!">Microsoft Plus!</a></li> <li><a href="/wiki/Microsoft_PowerToys" title="Microsoft PowerToys">Microsoft PowerToys</a></li> <li><a href="/wiki/Windows_Server_Essentials" title="Windows Server Essentials">Windows Server Essentials</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/23px-Symbol_list_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/31px-Symbol_list_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/List_of_Microsoft_Windows_versions" title="List of Microsoft Windows versions">List of versions</a></li> <li><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" 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