Understanding Windows 10, 11, and Server Release Cycles and Version Numbers
This article outlines Microsoft’s Windows 10, Windows 11, and Windows Server lifecycle policies, release schedules, and the exact ISO build numbers for each major version, helping users navigate support timelines and download the correct installation media.
The article explains Microsoft’s Windows version lifecycle, release cadence, and specific ISO build numbers for Windows 10, Windows 11, and Windows Server, providing a clear reference for administrators and end‑users.
Windows 10 : Consumer editions receive 18 months of support, commercial H1 editions 18 months, H2 editions 30 months. Since its 2015 launch, Windows 10 has had 14 major releases; the last major release, 22H2, is now discontinued. The final ISO build for 22H2 (October 2025) is 19045.6456.
Windows 11 : Since early 2021, Microsoft has issued one major release per year—21H2, 22H2, 23H2, and 24H2. Consumer editions have a 24‑month lifecycle; only 23H2 and 24H2 remain supported. The ISO build number for the 24H2 release (October 2025) is 26100.6899.
Windows Server : Server 2022’s official ISO build number (October 2025) is 20348.4294. Server 2025’s ISO build number is 26100.6899.
The article also provides a download link (Baidu Pan) for the ISO files and includes a reference image illustrating the version table.
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