Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.
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 ...
1/11/24 update added below. Windows 10 users worldwide report problems installing Microsoft's January Patch Tuesday updates, getting 0x80070643 errors when attempting to install the KB5034441 security ...
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