Ans: Restart the App server of QC by logging into the Windows server machine with credentials
Normally machine is : ceu-srk2-app81
and restart the service for HP Quality Center. Also check with DBAs that the DB Server for QC : EUCOP1(Production DB Server) and EUCOT1(Test DB Server) are up and running
If both are up and running, the issue should resolve itself.
Thanks
Admin
