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

Windows 11 had a rough 2025. We tracked the top 20 Windows 11 issues reported by Windows Latest, from failed updates to ...

Some machines are failing to start after security updates, prompting yet another Microsoft investigation Microsoft is ...

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

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

Microsoft’s first Windows 11 security update of 2026 broke shutdowns and some Remote Desktop sign-ins. Microsoft has released ...

In confirmed cases, Windows 11 boot failure occurs post-update, with the machine stuck at a black screen and unable to ...

The first big Windows 11 update of 2026 is landing as more than a routine security patch, bringing a wave of fixes that touch everything from battery life on cutting edge laptops to long standing ...

Microsoft's first Windows 11 update of 2026, specifically KB5034763, caused shutdown and restart failures for some users.

Microsoft delivers a fix for the Windows 11 issue that prevented PCs from shutting down after installing a security update.

Windows 11 users are experiencing issues with a Firewall configuration error when using Windows Firewall with Advanced Security, following the June 26 KB5060829 ...