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

Round and round we go.

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

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

Some machines are failing to start after security updates, prompting yet another Microsoft investigation Microsoft is investigating reports that its January 2026 security updates are leaving some ...

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

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

Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...

Everyone knows you need to keep your operating system up to date, but what happens when a company botches the update and ...

Beware the BitLocker startup loop after Windows 10 update. Update, May 18, 2025: This story, originally published May 17, has now been updated with a statement from Microsoft regarding the Windows 10 ...

QMR is Microsoft’s emerging tool to resurrect Windows after updates break bad. Here’s what it does and how to take it for a test drive. A noteworthy new feature is starting to make its way into ...