This error often occurs when performing a remote Invoke-GPUpdate if the time sync between the client and DC is skewed by more than 5 minutes (Kerberos failure).
As it turned out, the group policy update had changed some settings on the computers, causing the issues. By forcing an update to the group policy, John was able to reapply the correct settings and get the computers working again. group policy update force
"What's going on?" John asked one of the employees. This error often occurs when performing a remote
After creating a new Group Policy Object (GPO) and linking it to an Organizational Unit (OU), you can verify it works instantly on a test machine. Remote Group Policy Updates group policy update force