Similar to Cant Open edit setting of any vm but not quite and restart didn't work.
ESXi 5.5.0 host, all VMs suddenly started freezing, and I can't do anything via vSphere Client.
Can't even load the host's configuration - the tab is just blank
Right clicking any VM to edit its settings does this after freezing for a while
New VM Wizard does the same with a different error
viclient log attached