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

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

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

We knew this was coming — but it’s a disappointment anyway. For almost all Windows users, the latest update from Microsoft will be something of a bad news story, as some users suddenly get a faster, ...