Operating System Version Details Version Build Number Windows 11 (22H2) 10.0.22621 Windows 11 c2023 (21H2) 10.0.22000 Windows 10 c2022 (22H2) 10.0.22??? Windows 10 c2021 (21H2) 10.0.19044 Windows 10 (21H1) 10.0.19043 Windows 10 (20H2) 10.0.19042 Windows 10 c2019 (2004) 10.0.19041 Windows 10 (1909) 10.0.18363 Windows 10 c2019 (1903) 10.0.18362 Windows 10 (1809) 10.0.17763 Windows 10 c2017 (1803) 10.0.17134 Windows 10 (1709) 10.0.16299 Windows 10 c2016 (1703) 10.0.15063 Windows 10 (1607) 10.0.14393 Windows 10 (1511) 10.0.10586 Windows 10 c2014 10.0.10240 Windows 8.1 (Update 1) 6.3.9600 Windows 8.1 c2013 6.3.9200 Windows 8 c2012 6.2.9200 Windows 7 Windows 7 SP1 6.1.7601 Windows 7 c2009 6.1.7600 Windows Vista Windows Vista SP2 6.0.6002 Windows Vista SP1 6.0.6001 Windows Vista c2007 6.0.6000 Windows XP c2001 Windows XP2 5.1.26003  More specific than a version number, at least in Windows, is a build number, often indicating exactly what major update or service pack has been applied to that Windows version. See the last number shown in the version number column, like 7600 for Windows 7. Some sources note the build number in parenthesis, like 6.1 (7600).  Windows XP Professional 64-bit had its own version number of 5.2. As far as we know, that's the only time Microsoft has designated a special version number for a specific edition and architecture-type of a Windows operating system.  Service pack updates to Windows XP did update the build number but in a very minor and long-winded way. For example, Windows XP with SP3 and other small updates is listed as having a version number of 5.1 (Build 2600.xpsp_sp3_qfe.130704-0421 : Service Pack 3).
 At the end of 2022 a fully updated Windows 10 is essentially a super-version of Windows 11. Microsoft states of it’s own operating system Windows 11, “Some features in Windows 10 may no longer be available in Windows 11 after the upgrade.” In fact, Windows 11 is a scaled down version of Windows
Windows 11 system requirements:
- A compatible* 1 GHz or faster dual-core 64-bit processor from Intel, AMD, or Qualcomm
- 4GB of RAM – 8GB is preferred
- 64GB of drive storage space – yes, it can be installed on a thumb drive!
- UEFI Secure Boot supported and enabled
- A Trusted Platform Module (TPM), version 2.0
- A DirectX 12-compatible GPU with a WDDM 2.0 driver
- A 720p display larger than 9 inches in size (not particularly designed for phone or tablet use!)
- Installation requires a Microsoft account to complete.
*The processor requirement is the most restrictive; supported processors include 8th-generation and newer Intel Core processors as well as AMD Ryzen 2000-series processors and newer. These chips launched in late 2017 and early 2018. Older computers cannot officially run Windows 11, unlike Windows 10 that supported almost anything that could run Windows 7 or Windows 8.
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