Problem Solution
Certificates unexpectedly expire. Verify that the server clocks are synchronized on both sides of the federation. Note that you can configure PingFederate to notify administrators in advance of impending certificate expiration (see Runtime notifications).
Receive CrossModule or Network error messages when PingFederate is deployed with a supported HSM. Verify network connections to the Hardware Security Modules (HSMs) are active and running. Also ensure the HSMs have not been unintentionally shut down.