I have just upgraded my vCenter server from vSphere 5.1 to 5.5 update 3. The problem I am having is that in most cases, console access to all vm's now no longer works. I say most cases, as I can still access vm consoles from the vSphere client on my local machine and anyone can access the vm consoles from the vsphere client on the vCenter server itself; but when they try from elsewhere, e.g the vsphere client on their machines or from terminal servers they get the following errror:
Unable to connect to the MKS: Could not connect to pipe \\.\pipe\vmware-authdpipe within retry period
I have tried restarting hostd and vpxa agents on one of the hosts and putting another into maintenance mode and rebooting it, migrating a vm back on to the host but I still get the same error when trying to connect to the console of the vm.