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

The post Windows 11 boot issues tied to bad December update appeared first on Android Headlines.

It's not just January's one.

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

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

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

Microsoft is shifting focus to fixing Windows 11 performance and reliability after months of buggy updates, boot failures, ...

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

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

Microsoft released unplanned updates over the weekend. They correct errors in the January patches and bring new boot certificates.

Another week, another big Windows problem.

Today I reformatted my computer, and I havent been able to get it to boot in windows 2000 using any form of nvidia graphics driver.<BR><BR>Which is kinda strange, considering it was working ok ...