We use vCenter Server Appliance (VMware-vCenter-Server-Appliance-5.5.0.5101-1398493_OVF10.ova) to build our vCenter.
It works fine.
However, today, after I update it to a new version (from the file: VMware-vCenter-Server-Appliance-5.5.0.10000-1440531-updaterepo.zip),
the hosts are disconnected from vCenter with error message: Disconnected from host. Reason: Agent upgrade.
The tasks in each host also shows Upgrade agent fail.
The parameter AgentUpgrade.autoUpgradeAgents is set to TRUE.
I couldn't find any useful thread on internet.
Please help. Thank you!!