Hi there,
I successfully installed Dynamics CRM 9.1 on-premises (No Claim-based authentication nor IFD is configured) and discovered the below behaviors if I started a browser and navigate to:
Scenario 1: http://localhost
[Result: Auto logged in to the CRM, not prompting for username and password]
Scenario 2: http://hostname.xxx.com (Where xxx.com is the Active Directory domain)
[Result: Auto logged in to the CRM, not prompting for username and password]
Scenario 3: http://crm.yyy.com (Where crm.yyy.com is a random custom URL, I simply created an entry in the host file in the server, pointing crm.yyy.com to the IP address of the server)
[Result: Prompting for username and password. Need to provide the username and password to log in to the CRM]
From my perspective, I think Scenario 2 & 3 should result the same, i.e. auto log in the crm without the need to manually enter the credentials. May I know if you have any idea on this behavior? Thanks.