3.1b is expected to be the final release. As of September 2022, globally, just 0.39% of Windows PCs and 0.1% of all devices across all platforms continued to run Windows XP.Windows XP Service Pack 4 Unofficial is a cumulative update rollup for Windows XP (x86) English as well as security enhancements not addressed by Microsoft. However, over eight years from the end of life date (September 2022), the majority of PCs in some countries (such as Armenia) still appeared to be running on Windows XP. Still, Microsoft discouraged this practice, citing compatibility issues. After that, unofficial methods were made available to apply the updates to other editions of Windows XP. Windows Embedded POSReady 2009, based on Windows XP Professional, received security updates until April 2019.

Mainstream support for Windows XP ended on April 14, 2009, and extended support ended on April 8, 2014. Windows XP and Windows Server 2003 were succeeded by Windows Vista and Windows Server 2008, released in 20, respectively. 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 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. As a result, Windows XP is the first consumer edition of Windows not based on the Windows 95 kernel or MS-DOS. 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. An updated version of Windows 2000 was also initially planned for the business market. 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.

Windows xp unofficial service pack 4