Windows Version Numbers

A List of Windows Version Numbers & Major Windows Builds

Each Microsoft Windows operating system has a familiar name, like Windows 10 or Windows Vista, but behind each common name is an actual Windows version number1.

Below is a list of major Windows versions and their associated version numbers:

Windows Version Numbers

Operating SystemVersion DetailsVersion Number
Windows 10Windows 10 (1511)10.0.10586
Windows 1010.0.10240
Windows 8Windows 8.1 (Update 1)6.3.9600
Windows 86.2.9200
Windows 7Windows 7 SP16.1.7601
Windows 76.1.7600
Windows VistaWindows Vista SP26.0.6002
Windows Vista SP16.0.6001
Windows Vista6.0.6000
Windows XPWindows XP25.1.26003

[1] 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. This is 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).

[2] Windows XP Professional 64-bit had its own version number of 5.2. As far as I 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.

[3] 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).

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