Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.

Windows 11 runs into another disastrous bug with its latest update — Microsoft admits an 'issue in which devices are failing ...

Round and round we go.

Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...

Windows 11 KB5074109 (January 2026 Update) is causing major issues on some PCs, and Microsoft has more details to share.

Experiencing a Windows 11 boot loop can be incredibly frustrating, transforming your computer into a seemingly endless cycle of restarts that disrupts productivity. When your system continuously fails ...

Microsoft has linked recent reports of Windows 11 boot failures after installing the January 2026 updates to previously ...

Windows 11 shutdown bug explained with causes, fixes, and workarounds to stop restarts, battery drain, and failed power-offs ...

Microsoft said my PC can't run Windows 11, but I upgraded in 5 minutes anyway - here's how ...