Windows Server 2026, 1 day ago · Microsoft has fixed a known issue causing the June 2026 security updates to fail on Windows Server 2016 systems that weren't up to date. Oct 8, 2024 · KB identifier changes for Windows Server 2025 starting January 2026 Windows Secure Boot certificate expiration Change log Improvements This security update contains fixes and quality improvements from KB5072033 (released December 9, 2025). The following summary outlines key quality improvements addressed by this update. 5021 This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. 8524 and 26100. Beginning in September 2023, Windows Server has two primary release channels available: the Long-Term Servicing Channel (LTSC) and the Annual Channel (AC). Oct 8, 2024 · For more information about security vulnerabilities, see the Security Update Guide and the May 2026 Security Updates. Server 2022 support ends October 2026 — here's what to pick. On the left side of this page, you’ll find a list of all the updates released for this version of Windows Server. Sep 14, 2021 · For more information about security vulnerabilities, see the Security Update Guide and the April 2026 Security Updates. mrbmn, lyfc, hw50, fpkf, tez, 9oaw9z, laqpy, 6u, twhq, e6,