"The remote session was disconnected because there were network problems during the licensing protocol" (After Installing RemoteFX/cannot get RemoteFX to work on VM Win8)

Hi Guys

I am having similar probblems like a few others here (seen simliar posts; bu no results, so I post this again):

My setup:

Dell T7600: 2 x Intel E5-2670 2,89 Ghz  64GB ram  4x 256GB ssd

NVidia Geforce GTX580

Windows Server 2012 Standard running Hyper-V and Remote Desktop Virtualization Agent

2 VMs: Win8 Enterprise and Win7 Enterprise

Problem:

After enabling RemoteFX on the 2 VMs I briefly (through Hyper-V manager interface) got the message that Remote Desktop/RemoteFX was now handling the connection. I anticipated to be able to use RDP from a physical pc (either win 7 enterprise with RDP8 add on or win 2012 server), but all I  get is this error:

"The remote session was disconnected because there were network problems during the licensing protocol"

I tried to connect from Win8, win7 (+rdp8 add on) and server 2012... but still same message....

If I remove Remote FX from thew VM, I can connect fine via RDP from any physical or virtual pc.

any idea what is going on?

Phil