Situation: When install SCOM Agent on an untrusted computer, you may receive this event:
Log Name: Operations Manager
Source: OpsMgr Connector
Event ID: 21016
Description: OpsMgr was unable to set up a communications channel to FQDN and there are no failover hosts. Communication will resume when FQDN is available and communication from this computer is allowed.
Troubleshooting: If you just imported CA and untrusted client certificates on the untrusted computer, restart al SCOM service on SCOM Server. That should fix the problem and the Event Viewer will show Event ID: 21019
Description:
OpsMgr has returned to communicating with it’s primary host FQDN.