The user name or password is incorrect error while joining Windows domain

Question

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.

Solution

The account that I am using is the built in Administrator account.

You have to use an account which is part of the Domain Admin group to join a client to your domain. Also make sure the DNS settings on the client are correct.

Comments

[jscott]

Try qualifying the Domain Admin's credentials during the join. e.g. instead of parentdomain\Administrator try parentdomain.example.com\Administrator or the UPN [email protected].

[Dempa]

@jscott I will try that later. I did by mistake crash my DC1 so I need to restart it physicaly.That can't be done until next week.

[Dempa]

The account is in the Domain Admins group and the DNS settings is pointing at the first DC.

[duenni]

Anything in the Event Logs from your client and DC? First DC is also your DNS server?

[djdomi]

This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. To get notified when this question gets new answers, you can follow this question. Once you have enough reputation, you can also add a bounty to draw more attention to this question. - From Review

[Brandon H]

How does it not answer the question? I had exactly this issue - an incorrect username/password error when attempting to join a second domain controller to an existing one - and the issue was because the network adapters on both machines had a second, duplicate IP address associated with them (probably a result of the VM template they were built off). Was the issue I didn't give enough detail in my answer, because the answer is certainly correct?