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

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

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

There is a certain Windows 11 feature that, if turned off, requires a clean installation of the OS from scratch whenever you ...

Microsoft concedes January's out-of-band fix didn't stop some PCs from rebooting instead of sleeping Microsoft rounded off ...

Microsoft has issued an urgent fix for Windows 11 after a recent security update caused several major issues with the operating system. One of the bugs prevented some systems from shutting down or ...

Microsoft issues second emergency patch for Windows this month - update your PC today ...

Just in case you thought Windows 11 24H2's issues were over, here's the latest headache from the good folks at Microsoft. It turns out that physical installation media (meaning CDs and flash drives) ...

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

Microsoft shared a temporary workaround for customers experiencing Outlook freezes after installing this month's Windows security updates.