My co-worker changed his password today, and suddently when he launched vCenter he couldn't see any of our linked vCenters. He could connect to the linked vCenters just fine and see all of them, but whenever he connected the vCenter client to our main vCenter server it would not connect any of the linked vCenters.
It took a bit of snooping around in security logs in various vCenter servers, but the resolution was to connect to the main vCenter server, look at Home/Administration/Sessions and kill all of my co-worker's sessions. After that, he was able to connect his vCenter client to the main vCenter server and see all of our linked vCenters as well.
