Vital Windows 11 certificates are expiring: how to check if you’re affected

Microsoft has recently begun replacing expiring Secure Boot certificates on eligible Windows 11 systems running 24H2 and 25H2, according to a report by BleepingComputer. Secure Boot is an important ...
Windows Report

KB5074109 Update Causes Boot Failures on Windows 11 Devices

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

Windows 11 update may stop some PCs from booting, warns Microsoft

Microsoft has posted an online bulletin confirming that the company is investigating reports that state Windows 11's latest ...

Windows PCs ‘Suddenly’ Fail After Microsoft’s New Update

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

Microsoft investigates Windows 11 boot failures after January updates

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

Microsoft links Windows 11 boot failures to failed December 2025 update

Microsoft has linked recent reports of Windows 11 boot failures after installing the January 2026 updates to previously failed attempts to install the December 2025 security update, which left systems ...

Some PCs are failing to boot after this month's Windows Update

Another week, another big Windows problem.