I am adding the SSL Expiration monitor to all of our web servers. It has worked fine on all but 2.
The two that are giving me problems are centos 7 servers running Apache 2.4. They have the agent running on them and other applications are being monitored without issues, so I don't think it is a connection issue.
Here is the error message I receive.
Unexpected error occurred. Exception: Unknown or unsupported probe type SolarWinds.APM.Probes.SslExpirationDateProbe
Any thoughts on what I am missing would be greatly appreciated. SNMP is enabled and all required ports are open.