Getting NLA error while trying to RDP to machine

Question

Getting NLA error while trying to RDP to machine

Apurva Pathak 885

Hi folks,

Hope you are doing well!

I am getting NLA error while trying to RDP to a machine. I tried rejoining this VM to domain twice but no luck. When I rejoin this to domain it works for a few hours but the very next day I get the same error (pasted below). One more thing I have noticed that it takes a considerable amount of time when I try to login to this VM, which raises some questions on network packets drops?

Error:
User's image

Any help would be appreciated.

Thanks in advance!

Apurva

Apurva Pathak 885 Reputation points

2023-10-22T19:23:07.81+00:00

After digging around I got to know that the machine is slipping out of domain every day. I add this server to domain every late morning/ afternoon and it works until EOD, but the very next day it breaks. NSG, UDR, NVAs doesn't seem to be the culprit here as I do not see any drop at any place.

Any advice to track down the root cause would be very helpful to me.

Thanks in advance!

Cheers!!!

2 answers

Your answer

Apurva Pathak 885 Reputation points

2023-10-22T19:23:07.81+00:00

After digging around I got to know that the machine is slipping out of domain every day. I add this server to domain every late morning/ afternoon and it works until EOD, but the very next day it breaks. NSG, UDR, NVAs doesn't seem to be the culprit here as I do not see any drop at any place.

Any advice to track down the root cause would be very helpful to me.

Thanks in advance!

Cheers!!!

Answer 1

Anonymous

Please run;

Dcdiag /v /c /d /e /s:%computername% >C:\dcdiag.log (run on PDC emulator)
repadmin /showrepl >C:\repl.txt (run on any domain controller)
ipconfig /all > C:\%computername%.txt (run on EVERY domain controller)
ipconfig /all > C:\problemworkstation.txt (run on problem pc)

Also check the domain controller System and Replication (DFS or FRS) event logs for errors since last boot. Post the Event Source and Event IDs of any found. (no evtx files)

then put unzipped text files up on OneDrive and share a link.

Anonymous

2023-10-23T12:24:59.4266667+00:00

Just checking if there's any progress or updates?

--please don't forget to close up the thread here by marking answer if the reply is helpful--
Apurva Pathak 885 Reputation points

2023-10-24T09:01:38.5866667+00:00

Hi Dave,
Apologies I haven't completed the tests on DCs as I need some additional approvals, I will try to get this done ASAP. However, when I tried to repair the trust, I am getting below error, could you please suggest on this.

Answer 2

Anonymous

Off hand the domain controller is broken, but will know more when you put up the files.

Apurva Pathak 885 Reputation points

2023-10-24T14:03:48.02+00:00

I guess I've got the root cause, and it seems to by lying with the source server. Server is losing all of its connectivity to domain, weirdly enough ping is still working domain wise, only connection on specific ports seems to be broken (which is more than enough to break this). Have validated NSGs and routes but no luck as of yet.

Could you please advise on this.
Anonymous

2023-10-24T14:07:00.22+00:00

Could you please advise on this.

Well no, not yet, I haven't seen the files.
Anonymous

2023-10-24T18:44:04.89+00:00

Just checking if there's any progress or updates?

--please don't forget to close up the thread here by marking answer if the reply is helpful--
Apurva Pathak 885 Reputation points

2023-10-25T06:33:25.3333333+00:00

I have raised a case with MS on this, I will keep this thread updated with the findings and will close accordingly.

Thanks a lot !
Anonymous

2023-10-25T11:58:19.21+00:00

Just checking if there's any progress or updates?

--please don't forget to close up the thread here by marking answer if the reply is helpful--

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Getting NLA error while trying to RDP to machine

2 answers

Your answer