When the bug first appeared via the Jan. 13 KB5073455 security update, it was limited to Windows 11 version 23H2 Enterprise ...

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

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

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

After the first update stopped PCs from shutting down or going to sleep, the latest one halts the boot-up process. Microsoft ...

The first Windows 11 update for 2026 has caused unexpected trouble to some users and prevented the affected computers from shutting down or restarting properly.

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

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

The fix is for a bug that prevents some systems from shutting down, while another bug that prevents hibernation has no workaround yet.

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

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