can't login to Macbook pro after installing 10.8, won't take active directory credentials, please help?

You're not alone. It's been locking me out of my AD account even after one successful try. Talk to your IT person and have them unlock your account. You should be able to log in after that. However, it will continue to happen. Anytime you have to authenticate, it may lock you out even with the proper credentials. I had to call my IT department to unlock my account 15-20 times yesterday. Our server is set to lock after 3 unseccessful tries. Mountain Lion is causing to lock after 1, 2 or even 1 successful try. It's a disaster.

Is it possible you put a password on your firmware? If you did, you have a problem.

No, that's definitely not a possiblity. Thanks though.

Do you know if you created a mobile account when your account got created?

Hey there.

Well, I figured out what is causing my problem. It's Mobile accounts. I started fresh with a new install and a standard Active Directory account (not Mobile). I authenticated 20+ times. Rebooted at least 10 times. Everything worked great. Then I decided to create the Mobile account. That's when everything broke again. My Active Directory account was getting locked after one accurate attempt to authenticate. When IT unlocked it I could go one step further but then would lock me out the next time I tried to authenticate. I've replicated this twice.

So for me, it's clearly a Mobile account problem. Which is bad because half of the Macs under my care are notebooks.

Please let me know what you find out on your end.

Thanks,

Adam

I'm having the same issue, try resetting your keychain....seems to have reduced my locked account problems to a few times per day.