Test the SCEP Server

To test the SCEP server to confirm that it is correctly issuing SCEP challenges, visit the following URL from a browser that has been configured to support integrated authentication while logged in as a user with request permissions on the template configured for the SCEP server (where SCEP_SERVER_FQDN is the FQDN of your SCEP server):

https://SCEP_SERVER_FQDN/scep/challenge

Your SCEP server may have been configured to use HTTP rather than HTTPS.