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

Round and round we go.

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 ...

It's time to disable this decade-old Windows shortcut.

Frustratingly common for PC users, boot problems can stem from a variety of software and hardware glitches. A particularly frequent issue is when a Windows computer ...

Use these fixes if your Windows PC is stuck in a boot loop after a BIOS update. Before proceeding, disconnect all peripherals and check if your PC boots into Windows. Press and hold the power button ...

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

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.

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