ProGet Free only supports the Built-in user directory; you may still configure and switch to other user directories, but only the Built-in user directory will be used for logging in and authentication.

After switching to the Active Directory (LDAP) directory, you will no longer be able to sign in using the Built-In directory. To make sure the switch works, you'll log-in using a username/password now.

Note that "Administer" privilege will automatically be applied to the account, but you can change it later on the assign privileges page.