Windows Server 2016 build 14393.9688 (KB5131291) — release notes, known issues

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• Coverage CVE-2026-105590: Windows Active Directory Certificate Services Security Feature Bypass Nov 11, 2026 · names this build
• Coverage CVE-2026-105588: Windows DHCP Server Elevation of Privilege Vulnerability Nov 10, 2026 · names this build
• Coverage Windows Server 2016 Support Ends January 2027: ESU Eligibility and Migration Options Nov 11, 2026 · Windows Server 2016 coverage from this build's release window

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