Microsoft confirmed that it's aware of an issue where Windows 11 KB5089549 fails to install due to errors such as 0x800f0922.

Microsoft has released an emergency update for Windows 11 users after quite a few reported a big boot error following the May 2025 security update. The issue began ...

Microsoft has confirmed that the May 2026 Windows 11 security update (KB5089549) fails to install on some systems and ...

Microsoft is rolling out critical Secure Boot certificate updates to Windows 11 systems, with PCWorld reporting that current certificates expire in June 2026. Users must install quality updates and ...

The boot issue, which Microsoft previously investigated and linked to failed December 2025 updates, affected a limited number of commercial Windows 11 devices running versions 25H2 and 24H2.

If you bought your PC in the last two years, you’re likely already running new certificates. You can check in your Windows ...

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