Log file message:
(Single Sign-On) Failed authentication because single sign-on authentication is disabled. Ensure SECURITY_AD_USE_SINGLE_SIGN_ON is set to true and requisites are met.
Cause
Single sign-on authentication was attempted, but it has not been enabled in FME Server.
Resolution
See Updating the FME Server Configuration for information on how to update the FME Server configuration to enable single sign-on.