after installing the latest patch tuesday (May 2022) updates and restarting the servers the domain computers (Win 10) are not able to join to company's local network via ethernet or Wifi anymore. Both connection methods are using NPS with EAP and certificate based authentication.
Before installing the updates everything was working fine. This problem appeared right after installing the updates and rebooting the servers. No change in any settings regarding NPS or certificates were made before the problem started.
After installing the updates the NPS log stopped logging new events despite it seemed to be still enabled for both success and failure. I disabled and then re-enabled the logging and now it seems to log properly.
auditpol /set /subcategory:"Network Policy Server" /success:enable /failure:enable
Now the log event for every computer trying to join the company's local network seem to be this:
Event ID: 6273
Keyword: Audit Failure
Reason Code: 16
Reason: Authentication failed due to a user credentials mismatch. Either the user name provided does not map to an existing user account or the password was incorrect.
What could be the causing this problem?
Thank you in advance!