Hyper-V connection problem

Dear, we have Foglight 8.3 demo version in order to evaluate for our vmware and hyper-v platforms.

With vmware it was everything OK, but with Hyper-V we can't start collecting data in the agent. The agent version are 5.6.16. The logs tell these errors:

1) Service CredentialService: Failed to validate Policy: 48468cad-3ff0-4ec5-8cec-f1783f578559 of Type: com.quest.forge.credentials.authFailureRate  

2) Failure: Cannot establish connection to mitwpvssclus01: WinRM request to mitwpvssclus01/wsman failed: received HTTP/401 - credentials rejected

Failure: Cannot establish connection to mitwpvssclus01: WinRM request to mitwpvssclus01/wsman failed: [Caused by: HttpHostConnectException <Connection to https://mitwpvssclus01:5986 refused>

If I execute "telnet mitwpvssclus01 5985" I get the port open.

Please I need your help because we want to evaluate this product in order to acquire it.

Thanks a lot, regards.