This comes just hours after reports that another emergency update has been issued by Microsoft to affect other problems ...
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 ...
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 ...
Microsoft shares more details about the boot failure bug triggered by the latest Patch Tuesday update, KB5074109, in Windows 11.
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