PCoIP Zero Clients with firmware 3.3.0 may not be able to connect to the Vmware View Connection Server through certain network devices such as load balancers (Cisco ACE4700) that use zero length session ID's.
Fix:
This is resolved in firmware 3.3.1 or newer.
If you do not update:
The workaround is to turn off SSL termination at the network load balancer.