We have some workstations that receive a Windows Security Message : Unable to log into the network because the login credentials or the server certificate is incorrect.
when the ZCM agent tries to log into ZCM with the user's credentials. The user credentials work on other workstations.

When viewing the ZENworks properties window, the upper right hand shows: Logged In As : Not Logged In

All of the other properties show up in the window properly. Workstation policies and bundles seem to work.

I've tried uninstalling the Agent with the removal tool and re-installing without any change.

Anyone seen this? any solutions?

This occurred during the holidays. I think there was a power outage.