GoKawiilMicrosoft sets 2027 certificate expiration deadlines for Windows Update access
Microsoft has told IT administrators that security certificates used by Windows Update services will expire on preset dates, and devices that don't install specific updates beforehand will lose access to future updates. Windows 11 24H2 and Windows Server 2025 certificates expire June 19, 2027, requiring the September 2025 update or later; other supported Windows 11, Windows 10, and Windows Server 2022 versions share that expiration but need the July 2026 update. LTSB/LTSC releases of Windows 10 Enterprise 2019 and Windows Server 2016/2019 face an earlier May 17, 2027 cutoff.