Microsoft told Windows Latest it pulled Windows 11 KB5079391 after the optional update caused installation issues on some PCs.

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 are encountering the 0xC1900101-0x40021 Windows 11 upgrade error, execute the solutions given below. An outdated BIOS is the primary cause of the 0xC1900101 ...

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 ...

Microsoft has released an out-of-band update (KB5064489) for Windows 11, version 24H2. Read on to see what's new and if anything is broken. Microsoft has just released an out-of-band (OOB) update, ...

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