Microsoft Investigating Windows 11 January 2026 Update Causing Boot Failures on Some PCs
By
nsoonhui
4mo ago· 5 min readenNews
92/100
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Summary
Microsoft is investigating reports that the Windows 11 January 2026 Update (KB5074109) is causing boot failures on some PCs, requiring manual recovery. The company acknowledges the issue is limited to specific devices and is collecting data from users and IT administrators. The same update has also caused problems with Outlook Classic, File Explorer customization, sleep mode, Citrix Director, and Remote Desktop functionality.
Key quotes
· 5 pulledMicrosoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after installing the Windows 11 January 2026 Update.
Microsoft doesn't know how the January 2026 Update broke some PCs and is collecting data from consumers and IT admins.
For now, you don't have to uninstall the update, as the issue is 'limited' to specific PCs.
The same update also broke Outlook Classic, customization in File Explorer, sleep mode (S3), Citrix Director, and Remote Desktop.
Microsoft has received a limited number of reports of an issue in which devices
Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January Update.
