Windows Server 2019. AD Join 시 Changing the Primary Domain DNS name of this computer "" failed 메시지 발생

실제 join 동작은 전혀 문제 없습니다.

기술자료 서치시 아래와 같은 자료는 확인 되었습니다.

Changing the Primary Domain DNS name of this computer to "" failed.

https://blogs.technet.microsoft.com/instan/2012/01/14/changing-the-primary-domain-dns-name-of-this-computer-to-failed/

This is a bogus error message that can be safely ignored - it's caused by the domain join code ending up in a function which it doesn't need to run anyway during a domain join operation using the GUI.   What's failing is the attempt to change the Primary DNS suffix of the machine after the domain join has succeeded - but the Primary DNS suffix is already correct at that point which is why this can be ignored.