Server Failed to Join AD Domain

BSAS_ITGuy
BSAS_ITGuy used Ask the Experts™
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Can't Get Servers to Join Domain Server 2019, Gets a timeout when trying to join domain. We just stood up a new Domain controller and w have 2 servers that will not complete the Join process.
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Senior Information Technology Consultant
Commented:
have you checked the simple things like can you ping the AD servers from the servers that won't join?  have you tried turning off the firewall and re trying?  what troubleshooting steps have you perfomed?
Nagendra Pratap SinghDesktop Applications Specialist

Commented:
Please post a screenshot of the error. Also check if both servers can pin each other as mentioned by Sean.

Author

Commented:
We are not understanding why the server Pings are hit and miss. Please see attachment with the ping test and error. Attached is the error.
ping-test.jpg
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Sean BravenerSenior Information Technology Consultant

Commented:
how is your infrastructure configured?  are these VM's, physical machines, in the same rack, same DC?  you will need to have 100% perfect ping in order to get an AD join to work.  you need to troubleshoot the imperfect ping first.

btw there is no screen shot available of your ping

Author

Commented:
i just edited an re-attached the screenshot
Tom CieslikIT Engineer
Distinguished Expert 2017

Commented:
It looks like network connection issue
You must check Network adapter from both servers,,,
try to ping server from other computer than new server

Check switch,,,
If possible, change connection port on switch
Ping after.
If this will not help and PING is wrong from other computers, it maybe your NIC on server is giving you hard time.
if is possible switch NIC if server has more than one. If not, install another NIC, remove IP from OLD NIC and assign same IP to new NIC, test after.
Sean BravenerSenior Information Technology Consultant

Commented:
before changing nics try changing switch ports. otherwise troubleshoot as Tom mentioned

Author

Commented:
Thanks to all, you were correct in that it involved the NIC, as I was Pinging I would get sporadic replies. 1 Good 1 Bad, 2 Good and the next ping would be the opposite. So I Believe it to be a faulty Network cable or bad port on my switch. The end result was changing to a new network cable to new port on the switch and receive 3 sets of 4  good replies/ Then the server joined the domain seamlessly.

Thanks
Tom CieslikIT Engineer
Distinguished Expert 2017

Commented:
I think that you should award my answer

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