Use the following troubleshooting tips if CMS users can view the Enterprise Login page but cannot log in successfully:
Verify if CMS can connect to the network using the DNS. The login cannot succeed if the DNS does not recognize CMS or if CMS and the enterprise login method cannot identify each other on the network.
Verify that you created the user in CMS and in the enterprise authentication service.
Verify that the username is the same in CMS and in the enterprise authentication service.