• After setting primary server url in the agent configuration, the agent is not detected by the primary server.
• The agent is configured to be “Agent only”, Primary server option is disabled.

• If the server url is using https, you must register the server certificate in the agent
• In agent instance, got to Settings→Admin configuration→HTTPS and use the import button
• Restart the agent.

• Get the server logs of the agent and look for below exception:

If you can find it, you need to edit the file /etc/hosts and register the FQDN hostname of the local host with 127.0.0.1