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

After Windows 11 January 2026 update, we're seeing reports of other issues, including a sleep problem (S3), and more.

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

If Windows 11/10 is not locking on sleep, execute the solutions mentioned below. If the sleep function is unreliable, we can use the screen saver to enforce a lock. This will ensure that the PC ...

Windows 11 separates screen timeout (when the display dims) from full sleep mode. Adjusting these gives you precise control ...

Microsoft has now admitted that the January security updates for Windows 11 23H2 can interfere with sleep mode and shutdown. Microsoft has now published this in the Windows Release Health notes.

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

Microsoft has released the KB5055627 preview cumulative update for Windows 11 24H2 with many new features gradually rolling out, and some new bug fixes for everyone. The KB5055627 update is part of ...