Once you set up ActiveDirectory synchronization and added users to Cerebro, those users will be able to log into Cerebro using their domain account.
Log in without entering a login and password is only possible if the user starts Cerebro from a Windows-based computer already logged into a domain network. The type of authentication is selected by clicking an ActiveDirectory authentication option on a Cerebro login screen (see the picture below).
In other cases other than logging in Cerebro from a domain network workstation, the Login or E-mail option must be selected.In other cases you should switch authentication type to Login or E-mail and use Cerebro login and password.