"Remoting Disabled"

We have quite a few Dell ThinClients. We have the most basic setup without any broker service. I just deployed 7 newly configured out of the box. IP for the thin client, IP to RDP to. When we login, we get "remoting disabled". We are trying to RDP into a Windows 2019 VM. We have RDP turned on in Windows Settings, confirmed the windows firewall isn't blocking, confirmed the user has RDP rights, and RDP'd successfully from a Windows machine directly to the VM. Thoughts on a setting in ThinOS?