I have setup a fresh Windows Server 2019 installation on an ESXI host, and the WS2019 guest will only allow the Admin user to establish an RDP connection.
I have configured 2 additional users (so that we can stop sharing admin accounts!) and added said users to the admin group as well as the remote users group.
I have successfully logged in locally (via ESXI web console) to both of the new users, to account for some potential issues when logging in via RDP for the first time. This is how I know the passwords are working correctly.
I have also confirmed the requisite group+security+firewall policies, and assume they are as needed since the admin user can RDP successfully into the server.
So, what else could I be missing? Why would RDP deny a valid UN/PW set for users in the right groups?