I'm beyond frustrated trying to figure this out.
BE 21 is installed on Server 2016, and the Agent is installed on both Server 2016 and Server 2019.
BE can see them and install the Agent on them no problem.
Agent Utility has no issues.
In BE, I can see the server but there are no resources such as drives, etc.
To add a bit of frustration and confusion, I could see everything this morning (C, E, System State, etc).
I've reinstalled the Agent, and restarted services several times. I have AV and firewall turned off.