Microsoft is alerting customers that its May Patch Tuesday update is causing authentications errors and failures tied to Windows Active Directory Domain Services. In a Friday update, Microsoft said it was investigating the issue.
The warning comes amid shared reports of multiple services and policies failing after installing the security update. “Authentication failed due to a user credentials mismatch. Either the user name provided does not map to an existing account or the password was incorrect.” posted an admin to a Reddit thread on the topic.
