I have VMWare box with ESX V5 and I have been managing a couple of hosts thru vSphere V 5.0.
When I just tried to add a new Host w/ ESXi V5.5, I got an error "Disconnected" (please see the screenshots) and later on, the new host disappeared from vSphere Client.
Can you help?
Edited: Andrew Hancock aka hanccocka
VMware Zone Advisor