Tried joining a VCSA to AD today and received the error message:
Error: Idm client exception: Error trying to join AD, error code , user [administrator], domain [home.lab], orgUnit 
Couldn’t find anything on google, so connected to the VCSA via SSH, tried a simple ping test to see if DNS was the issue.. no dice. Then tried adding the VCSA to AD manually.
Looks like the administrator password is expired.
So.. I logged into the DC, and as we expected,
So, as it turns out, if AD is healthy, this isn’t an issue. Who would have known…