Microsoft warns that KB5013943 update is causing authentication failures in Windows 11, Windows Server and more
Following the release of this month's Patch Tuesday updates, Microsoft has issued a warning that installing the KB5013943 update can lead to authentication issues for various Windows services.
The update was released on May 10, and was meant to -- among other things -- fix an issue with screen flicker in Safe Mode. But in addition to causing error messages for some users, the KB5013943 update has also led to authentication failures Windows domain controllers.