Joining Ubuntu to Windows Domain - TSIG Error - Help please!

Julian.ECS

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Hello,
I am quite new to Linux / Ubuntu so please keep answers quite simple!
I am testing adding Ubuntu (latest v22) machines to a company windows server 2019 domain. I am setting up the machines with Linux then manually adding to the domain.
This looks to be going quite well but have a apparent issue.
I have got as far as editing mkhome and doing a sudo pam-auth-update and that is all fine. I then do:
sudo systemctl restart sssd - that looks to have worked
I then:
systemctl status sssd - this is where the problem occurs, it get a file that includes:
*****.***.local systemd[1]: Started System Security Services Daemon.
*****.***.local sssd[16088]: ; TSIG error with server: tsig verify failure

*****.***.local sssd[16088]: update failed: REFUSED
*****.***.local sssd[16088]: ; TSIG error with server: tsig verify failure
*****.***.local sssd[16088]: update failed: REFUSED
*****.***.local sssd[16088]: ; TSIG error with server: tsig verify failure
*****.***.local sssd[16088]: update failed: REFUSED
If I ignore these TSIG errors and continue the machine appears to work OK on the domain - I can log on as a domain user, log onto sharepoint, open shared drives, install McAfee EPO agent and it communicates with the on prem EPO server etc.

What does the TSIG error mean? How do I fix it? Does it matter?

I have followed:
https://computingforgeeks.com/join-u...ory-ad-domain/

I have not touched /etc/samba/smb.conf - should I do so and will it help, if so what do I need to change?

Thanks,
Julian
 
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