This is a symptom of an improperly cloned operating system install. you should run sysprep on the machine in order to generate a new machine SID. Duplicate SID Error in windows server 2012
I got this error while adding/joining my windows server 2012 R2 to my a domain. it was due to wrong/improper configuration of server (this Vm server was cloned and was SID was not configured properly.
Follow the step mentioned in mentioned article : Article ID: 243267
HOW TO: Find and Clean Up Duplicate Security Identifiers with Ntdsutil in Windows Server 2003
Start Ntdsutil
To start Ntdsutil:
- Click Start, and then click
Run. - In the Open box, type
ntdsutil, and then press ENTER. To access Help at any time, type ? at the command prompt, and then press ENTER.
Look for a Duplicate SID
- At the Ntdsutil command prompt, type security account management, and then press ENTER.
- At the Security Account Maintenance command prompt, type
connect to server
DNSNameOfServer, and then press ENTER. Connect to the server that stores your SAM database. - At the Security Account Maintenance command prompt, type
check duplicate sid, and then press ENTER. A display of duplicates appears.
Clean Up a Duplicate SID
- At the Ntdsutil command prompt, type security account management, and then press ENTER.
- At the Security Account Maintenance command prompt, type
connect to server
DNSNameOfServer, and then press ENTER. Connect to the server that stores your SAM database. - At the Security Account Maintenance command prompt, type
cleanup duplicate sid, and then press ENTER. Ntdsutil confirms the removal of the duplicate. - At the Security Account Maintenance command prompt, type
q, and then press ENTER. - When you are finished with Ntdsutil, type
q, and then press ENTER.
hope this Help. thanks
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