I am trying to add an second domain controller (DC) to my domain. The server is running Windows Server 2012 R2. After getting the error when promoting it to an domain controller I tried uninstalling the AD DS role and joining the domain as you would do with an regular computer/server. I got the same error there to.
The error I get is:
"The following error occurred attempting to join the domain "example.com". The user name or password is incorrect.".
I did join one other server to the domain with the same user and the same password and I am sure that I type the correct password. I've also tried to copy the password from Notepad into the password field. I am able to sign in to the other DC with the same username and password. The account that I am using is the built in Administrator account.
My question is how I should fix the error saying that I use the wrong user name or password.
Best Answer
You have to use an account which is part of the
Domain Admingroup to join a client to your domain. Also make sure the DNS settings on the client are correct.