If Access Manager is installed with a domain name that contains both upper and lowercase characters, you cannot log in to the Console. For example, if the domain name is amhost.realm-name.Example.COM, you cannot log in using amhost.realm-name.example.com.
Workaround. There are two workarounds:
First, try logging in using the following URL:
http://amhost.realm-name.example.com:port/amserver/UI/Login?realm=realm-name
Or, add the realm-name to the Realm/DNS aliases:
In the Admin Console, go to Realms, Edit Realm - realm-name.
Add amhost.realm-name.example.com to the Realm/DNS aliases.
Restart the Access Manager server.
Log in using the following URL:
http://amhost.realm-name.example.com:port/amserver/UI/Login