Hah! I feel you. Well, I ran some tests. I created a new Staff account with my AD username and email address. Set that to "use any available backend", and then went to log in to the SCP portal with my AD password. That worked great!Next, I deleted that staff account, then went to create a new User account (from the Staff Panel). I clicked Add User, entered the email address and full name. After saving, I clicked 'Register' and set the auth option to "use any available backend" and changed the username to my AD username. I then saved the settings and noted that the account was "Active (Registered)". After that, I loaded up the main client landing page and attempted to signin there with my AD username/password, but none of the information would work. I then went back to the Staff Panel and managed the new account, manually added a password, and then saved those settings and repeated trying to log in as a Client. It took my manually entered password, but the AD password just wasn't working.I've searched around a bit, but haven't been able to find any solid answers to my issues.