Symptoms

When I open a Runtime Form in our Test Environment it fails because it is trying to go to the Dev Runtime URL.
 

Diagnoses

This issue comes up if the Identity.ClaimIssuer table has it's URI column set to an incorrect value. In this case it was due to the URI pointing to the Dev URL.
 

Resolution

We brought the server offline so we could update SQL.
We updated the Identity.ClaimIssuer table so that the URI was pointing to the Test server. Restarted the server and the issue was resolved.