I am running ZCM SP1 (updated from 10.0.3) on a Win2K3 R2 server. The update went on with no errors reported, services are all started. But none of my clients in the user source can login to their pc's and are getting a zcm login screen instead. I verified my user source is still correct and I can see all of my users in zcc. The message displayed when a user tries to manually login is "Unable to log into the network because the login credentials or the server certificate in invalid" I see no errors in the log file (default log level) and could not see anything on either the server or clients. The only thing I see in the system logs in zcc are a bunch of ZenHttp.BadService messages that seem to appear when a client tries to login. Any help would be greatly appreciated