Cannot join Active Directory in Truenas Core 12.0 U2.1

Hi Team,

we are trying to evaluate the AD/Ldap integration function of TrueNAS to see if TrueNAS products could replace our production services. but I have some issue with it.

from the UI it shows, it successfully joined the Domain, there is a button Leave Domain appear. but switching the UI out and back in shows no leave domain button.

many thanks

Kind Regards

In CLI,  

"midclt call activedirectory.get_state" gives:

FAULTED

"midclt call cache.pop DS_STATE" gives:

{"activedirectory": "FAULTED", "ldap": "HEALTHY", "nis": "DISABLED"}

"midclt call activedirectory.check_clockskew" gives:

{"pdc": "***.edu.au", "timestamp": "2021-03-26 20:48:54.292424", "clockskew": "0:00:06.256285"}

"midclt call activedirectory.started" gives:

[EFAULT] failed to call wbcPingDc: Domain is not trusted or cannot be found.
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 137, in call_method
    result = await self.middleware._call(message['method'], serviceobj, methodobj, params, app=self,
  File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1195, in _call
    return await methodobj(*prepared_call.args)
  File "/usr/local/lib/python3.8/site-packages/middlewared/schema.py", line 973, in nf
    return await f(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/activedirectory.py", line 919, in started
    raise CallError(wberr, err)
middlewared.service_exception.CallError: [EFAULT] failed to call wbcPingDc: Domain is not trusted or cannot be found.

Really wish this issue could be resoved to show to our stakeholders

We are from GMT+11 Sydney, Australia time. We could make teamview session if needed.