Windows Server 23H2 build 25398.1791 — release notes, downloads, known issues

Windows Server, version 23H2 (25398.1791)

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Fix Windows 11 23H2 Release Preview: Build 22631.5982 Reliability Fixes Sep 11, 2025 · Windows Server 23H2 coverage from this build's release window
Coverage KB5063875: Aug 2025 Windows 11 LCU+SSU for 22H2/23H2 with Secure Boot Aug 12, 2025 · Windows Server 23H2 coverage from this build's release window
Coverage Windows 11 23H2 End of Updates: Plan Your Upgrade Before Nov 11, 2025 Aug 12, 2025 · Windows Server 23H2 coverage from this build's release window
Coverage Windows 11 23H2 End of Updates: Plan Your Upgrade Before Nov 11, 2025 Aug 13, 2025 · Windows Server 23H2 coverage from this build's release window
Coverage Windows 11 23H2 End of Updates: Plan Your Migration by Nov 11, 2025 Aug 13, 2025 · Windows Server 23H2 coverage from this build's release window
Coverage Windows 11 23H2 Ends Updates: Plan Your Upgrade by Nov 11, 2025 Aug 14, 2025 · Windows Server 23H2 coverage from this build's release window
Coverage Windows 11 23H2 End of Updates: Upgrade to 24H2/25H2 by Nov 11, 2025 Aug 14, 2025 · Windows Server 23H2 coverage from this build's release window
Coverage Windows 11 23H2 End of Updates: Plan Your Migration Before Nov 11, 2025 Aug 14, 2025 · Windows Server 23H2 coverage from this build's release window

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