After upgrading to 5.1, I have been running into this error a lot. For some reason, the SSO service seems to stop working after about a week and requires a reboot to get it back online. Does anyone know a way to keep this service up and not require weekly reboots of my vcenter server that has SSO, inventory and vcenter installed on it? Is there a service I can restart or anything like that?
From the looks of it, it's the Active Directory Web Service for some reason stops working and can't restarts. I checked the logs from SSO but didn't see anything that realy jumped out of me past that. Time to go check Microsoft to see why it's stopping.
We had a time sync issues that was causing a number of problems as well. Once we got that taken care of, a lot of the issues did go away. The other side of the coin was that Active Directory Web Services would stop working, at which time I would have to log into the server and restart the service within Services. Once AD web services restarted, it was working great.