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.

Microsoft might have fixed that bug with shutdowns, but its latest Windows 11 update means sleep mode now locks up some PCs.

This comes just hours after reports that another emergency update has been issued by Microsoft to affect other problems ...