Changing the Realm
Changing the realm in the security database invalidates all user digest passwords. This only affects application servers whose authentication setting is digest or digestbasic mode.
In digest mode, you need to re-enter all user passwords in the security database. Changing the passwords in the security database will cause the server to recalculate the digest passwords. In digestbasic mode, the first time a user logs into the server after the realm is changed, the user will be prompted to enter their passwords multiple times before they are logged into the system. However, the server will automatically recalculate their digest password with the new realm at that time, and they will have a normal login process for future access.
Warning
If you change the realm, any App Servers that uses digest authentication will no longer accept the existing passwords. This includes the Admin Interface, and includes passwords for users with the admin role. Therefore, changing the realm will make it so you can no longer log into the Admin Interface.
If you are sure you want to change the realm after installation despite the warning, follow these steps:
Click Security in the left tree menu.
Click the Configure tab. :
Change the realm to the desired value.
Click OK.
Click OK again on the confirmation page. Note that this will invalidate all digest passwords, including the password for the current user running the Admin Interface if the Admin Interface App Server is set to digest authentication (which is the default setting).