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 ...

Windows 11 runs into another disastrous bug with its latest update — Microsoft admits an 'issue in which devices are failing ...

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

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

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

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

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

If you’re stuck in Diagnostic Startup mode on your Windows 11/10 PC with an error message saying your PIN isn’t available, we will show you how to troubleshoot ...

Dealing with the "Your PC did not start correctly" error on a Windows 10 or 11 computer can be quite troublesome. This error usually pops up when you try to boot your ...

If you encounter a Blue Screen on first boot only when you start it the first time in WIndows 11/10, use the following fixes: Clearing CMOS usually fixes booting issues. You can also try this. Please ...