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The first Windows 11 update for 2026 has caused unexpected trouble to some users and prevented the affected computers from shutting down or restarting properly. Microsoft has acknowledged the bug, confirming that it was linked to the KB5034763 update.
Microsoft recently rolled out the first Windows 11 update of the year. January’s Patch security fixes caused multiple problems such as Shut down and sign-in failures for millions of users. The issue has left many stuck with systems that remained powered on despite attempts to turn them off.
The tech giant also rolled out a fix for the issue and noted that the problem was caused by a compatibility issue in the update process.
Windows Latest confirm reported: “Microsoft has officially admitted to at least three problems so far. A bug where Remote Desktop Connections fail (fixed today). A bug where Windows 11 23H2 would not shut down (fixed today). A bug that crashes Outlook Classic (not fixed).”
According to Microsoft’s Windows Message Center, the issue stemmed from an out-of-band update released in mid-January 2026. After installing the patch, some Windows 11 devices failed to complete shutdown or restart operations.
“After installing Windows 11 KB5074109 (25H2) and other updates, some users started reporting that Remote Desktop connections from the ‘Windows App’ failed during sign-in. This happens when you click Connect, but the credential prompt flow breaks immediately, and you get an authentication failure,” mentioned Windows Latest in a recent post.
This issue with the normal shutdown and hibernation affects Windows 11 23H2, which is no longer supported for consumers. Only enterprises will be able to run into it, confirmed Windows Latest.
Microsoft has released an out-of-band (OOB) update for all affected versions of Windows, including Server and even Windows 10, which is in ESU (Extended Security Updates).
These OOB emergency updates are offered through Microsoft Update Catalog only. Users should manually find the KB ID and search it on Update Catalog for the .msi installer. Following are the details of update, affected versions and issues fixed by Microsoft.
