Unable to join machines to the domain. Error Message “The Specified User already exists”

unable to join machines to the domain

Unable to join machines to the domain. Error Message “The Specified User already exists”

You are trying to join a computer to the Active Directory domain and getting the below error:

Error Description: Unable to join machines to the domain. Error Message “The Specified User already exists”

PROBLEM DESCRIPTION :

We were not able to join the machines to the domain and got the following error message:

“The Specified User already exists”

In the AD Users and Computers we were not able to “Find” any such account in the entire directory as the disabled accounts existed in a Non Built-in container.

Resolution:

assuming FQDN= abc.xyz.ad

We took the LDIFDE dump for the entire domain partition using the command:

ldifde -f out.txt -d "dc=abc,dc=xyz,dc=ad" 

We now found multiple disabled accounts present under a Non-Built-in container in the AD.

We deleted the machine accounts from the AD container and then forced the replication using the command:

repadmin /syncall /AeP

We have now successfully joined all the machines to the domain.

The issue is resolved.

Reference:

http://support.microsoft.com/kb/237677

Ravi Chopra

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