Hello,
Could you share more about your environment? Specifically, how many RDS (Remote Desktop Services) roles are deployed in your Hyper-V, and what are they?
Do you mean the error occurred after adding your RDSH to your RDCB, when trying to RDP from a client PC to one of the session hosts?
Please help me understand this issue better so I can provide more effective assistance.
Best regards,
Karlie Weng