Cannot Join AD

Hi,

I'm not sure if this is the correct place to ask for support. I don't really think this is a bug but rather a configuration problem. I want to join our FreeNAS 11.3 to our AD domain. I did test with 12.0 BETA2 first which went fine but for some reason I'm not able to join our AD. It does not create a computer account principal.

I attached the settings I did with our proof of concept in version 12.00-BETA2. I tried the same settings but it doesn't work for us.