can not initialize hyper-v host

Hello

I have a fresh install Windows server 2012 R2 with all updates and vWorkspace 8.6.309.

I have added the hyper-v host and the CB (same server) and when I try to initialize the host I get the following error:

Remote computer returned error processing message. The system cannot find the file specified (-2147024594) Setting host to offline

Thanks for any suggestion!

Tamas