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Windows XP

Windows XP is a major release of Microsoft's Windows NT operating system. It was released to manufacturing on August 24, 2001, and later to retail on October 25, 2001. It is a direct upgrade to its predecessors, Windows 2000 for high-end and business users and Windows Me for home users, and is available for any devices running Windows NT 4.0, Windows 98, Windows 2000, or Windows Me that meet the new Windows XP system requirements.

Developer

August 24, 2001 (2001-08-24)[2]

October 25, 2001 (2001-10-25)[2]

Service Pack 3 (5.1.2600.7701) / April 19, 2019 (2019-04-19)[3]

Consumer and Business

Windows Vista (2007)

Windows XP (archived at Wayback Machine)

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Development of Windows XP began in the late 1990s under the codename "Neptune", built on the Windows NT kernel and explicitly intended for mainstream consumer use. An updated version of Windows 2000 was also initially planned for the business market. However, in January 2000, both projects were scrapped in favor of a single OS codenamed "Whistler", which would serve as a single platform for both consumer and business markets. As a result, Windows XP is the first consumer edition of Windows not based on the Windows 95 kernel or MS-DOS. Windows XP removed support for PC-98, i486 and SGI Visual Workstation 320 and 540 and will only run on 32-bit x86 CPUs and devices that use BIOS firmware.


Upon its release, Windows XP received critical acclaim, noting increased performance and stability (especially compared to Windows Me), a more intuitive user interface, improved hardware support, and expanded multimedia capabilities. Windows XP and Windows Server 2003 were succeeded by Windows Vista and Windows Server 2008, released in 2007 and 2008, respectively. However, some criticisms of Windows XP were its security issues at launch, and many people believed their anti-piracy schemes had gone too far.


Mainstream support for the main Windows XP ended on April 14, 2009, and extended support ended on April 8, 2014. Windows Embedded POSReady 2009, based on an embedded version of Windows XP Professional, was the last supported version of Windows based on the Windows XP codebase, and received security updates until April 2019. Prior to the main Windows XP's end of support date, unofficial methods were made available to apply the updates to other editions of Windows XP. Microsoft has discouraged this practice, citing compatibility issues. Extended support for Windows Embedded POSReady 2009 ended on April 9, 2019, marking the overall end of the Windows XP codebase after 18 years.[5]


Five years since the end of Windows XP's overall support date including the extended support of Windows Embedded POSReady 2009 (as of 2024), a large majority of PCs in Armenia still appear to be running Windows XP.[6][7] Few have also had some significant share, such as Colombia. As of 2024, globally, under 0.6% of Windows PCs[8] and 0.1% of all devices across all platforms continued to run Windows XP.

Expiration date

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Improved and shims compared to Windows 2000.[35]

application compatibility

8.1, upgradeable to DirectX 9.0c.[36]

DirectX

A number of new features in including task panes, thumbnails, and the option to view photos as a slideshow.[37]

Windows Explorer

Improved imaging features such as Windows Picture and Fax Viewer.

[38]

Faster start-up, (because of improved functions) logon, logoff, hibernation, and application launch sequences.[27]

Prefetch

Numerous improvements to increase the system reliability such as improved ,[39] Automated System Recovery,[40] and driver reliability improvements through Device Driver Rollback.[41]

System Restore

Hardware support improvements such as 800,[42] and improvements to multi-monitor support under the name "DualView".[43]

FireWire

.[44]

Fast user switching

The font rendering mechanism, which is designed to improve text readability on liquid-crystal display (LCD) and similar monitors, especially laptops.[18]

ClearType

[45] and registration-free COM.[46]

Side-by-side assemblies

General improvements to international support such as more locales, languages and scripts, support in Terminal Services, improved Input Method Editors, and National Language Support.[47]

MUI

4.5

ActiveSync

(June 7, 2010, Redistributable)

DirectX 9.0c

Internet Explorer 8

Windows Media Format Runtime and

Windows Media Player 11

2007

Microsoft Virtual PC

.NET Framework 4.0

Visual Studio 2010

5.7

Windows Script Host

4.5

Windows Installer

3.02

Microsoft NetMeeting

Windows Sidebar

Windows Defender

was the last version of Microsoft Office to be compatible with Windows XP.

Office 2010

The subsystem can be installed to allow certain Unix-based applications to run on the operating system.

Windows Services for UNIX

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Several Windows XP components are upgradable to the latest versions, which include new versions introduced in later versions of Windows, and other major Microsoft applications are available. These latest versions for Windows XP include:

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April 14, 2009 (2009-04-14)[4]

April 8, 2014 (2014-04-08)[4]
The official exceptions ended in April 2019.

Unsupported as of June 30, 2005[112]

Mainstream support ended on January 11, 2011[4]
Extended support ended on January 12, 2016[4]

Mainstream support ended on April 12, 2011[113]
Extended support ended on April 12, 2016[113]

Mainstream support ended on January 14, 2014
Extended support ended on January 8, 2019[114]

Mainstream support ended on April 8, 2014
Extended support ended on April 9, 2019[115]

A patch released in May 2014 to address recently discovered vulnerabilities in Internet Explorer 6 through 11 on all versions of Windows.

[140]

A patch released in May 2017 to address a vulnerability that was being leveraged by the .[141]

WannaCry ransomware attack

A patch released in May 2019 to address a in Remote Desktop Services which can be exploited in a similar way as the WannaCry vulnerability.[142][143]

critical code execution vulnerability

Source code leak

On September 23, 2020, source code for Windows XP with Service Pack 1 and Windows Server 2003 was leaked onto the imageboard 4chan by an unknown user. Anonymous users managed to compile the code, as well as a Twitter user who posted videos of the process on YouTube proving that the code was genuine.[167] The videos were later removed on copyright grounds by Microsoft. The leak was incomplete as it was missing Winlogon and some other components.[168][169] The original leak itself was spread using magnet links and torrent files whose payload originally included Server 2003 and XP source code and which was later updated with additional files, among which were previous leaks of Microsoft products, its patents, media about conspiracy theories on Bill Gates by anti-vaccination movements and an assortment of PDF files on different topics.[170]


Microsoft issued a statement stating that it was investigating the leaks.[169][171][172]

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BlueKeep (security vulnerability)

Comparison of operating systems

History of operating systems

List of operating systems

Joyce, Jerry; Moon, Marianne (2004). Microsoft Windows XP Plain & Simple. . ISBN 978-0-7356-2112-1.

Microsoft Press

Windows XP End of Support

Security Update for Windows XP SP3 (KB4012598)

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