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

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

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

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

A Windows security update bug has prevented some Windows 11 24H2 and 25H2 users from booting into their PCs, requiring them ...

It's not just January's one.

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

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

Can’t boot Windows using a USB drive? If yes, you have come to the correct page. In this post, we will help you find a working fix for boot issues with USB. To boot Windows using USB, you first need ...

Microsoft issued a second emergency Windows patch in January after earlier fixes caused new bugs, raising concerns about ...

We have already covered solutions for the CrowdStrike BSOD issue on Windows computers. Now that Microsoft has released an official recovery tool that you can download and use it to fix the CrowdStrike ...

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