When you login to the Symantec Endpoint Protection Manager console using the Default Administrator, you can login successfully. However, if you create a new Admin and try to login, you get an error "Authentication failure"
Reseting the password for the additional Admin account does not resolve the issue.
The Domain is not specified correctly during logon or the Admin account created does not belong to all the domains in SEPM.
In the SEPM Console, click on the Admin tab.