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

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

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

Windows 11 KB5074109 is wreaking havoc thanks to several issues, with the most serious keeping users out of the operating ...

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

A fresh wave of Windows 11 update trouble is making the rounds, and this one is about as disruptive as it gets: some PCs reportedly can’t boot after installing the latest January 2026 security update.

Microsoft has begun rolling out a major update to Windows 11 (KB5022913) with a whole bunch of new and updated features in tow, such as a touch-optimized taskbar for 2-in-1 devices and an improved ...

In confirmed cases, Windows 11 boot failure occurs post-update, with the machine stuck at a black screen and unable to ...

This Safe Mode error can occur due to several reasons including hardware failure, software corruption, corrupt files in the system, corrupt drivers, and issues with ...

Last week, Microsoft released an optional Windows 11 update that brought some new features to the Start menu, taskbar, and lock screen. Unfortunately, that update is wreaking havoc for some users. As ...