Can't Reach RDP on Windows Hyper-V Server 2019

Hi,

Background:

1. While it was still available, I downloaded Windows Hyper-V Server 2019and installed it on a fresh machine. The installation completed without incident.
2. After installation, I did the standard sconfig config, enabling both Remote Managementand Remote Desktop, as well as incoming pinging.
3. I then joined the Hyper-V to the domain without incident. 
4. The Hyper-V could be pinged from anywhere in the LAN.
5. I can successfully manage the Hyper-V via Hyper-V manager mmc from other domain machines.

The Problem:

I can not RDP into the Hyper-V.

1. I checked, and the Scregedit.wsf /ar /v  registry value is 0 (i.e., do NOT block RDP).
2. I also tried netsh advfirewall firewall set rule group="Remote Desktop" new enable=yes, to no avail.
3. I cannot even get a reaction when on the Hyper-V itself, withtelnet localhost 3389 .

I would appreciate any suggestions.

10x,

mlavie58