VMware: There is a problem authentication into the legacy vCenter Server using credentials provided by the user

During upgrade VMware vCenter Server 5.5.0 (based on Windows 2012R2) to 6.0.0 I received a warning message: Error: There is a problem authenticating into the legacy vCenter Server using the credentials provided by the user. Resolution: Check if vCenter Server is up and running. Double check provided vCenter Server credentials     Some troubleshooting: All […]