The domain join cannot be completed because the SID of the domain you attempted to join was identical to the SID of this machine.


Background of the issue: Initially I have created a virtual machine with windows server 2012R2 operating system and made multiple copies. I used one VM for active directory ( and other VM used for Application server. When I was tried to join application server VM into domain controller getting below error due, both machines SID’s are same.

Solution: You can follow below mentioned steps to resolve the issue.

  1. Click on start button and Type ‘RUN’
  2. In Run Prompt type ‘%WINDIR%\system32\sysprep’
  3. Double click on ‘sysprep’ and check ‘geberalize’ checkbok as per below image.
  4. After some time server will restart automatically.

Please note that once system restarts network adapter settings, Host name, Username and password and more will be reset.

After providing all required details to login server, I’m able to join application server into active directory.


“ Yours, Ravi Theja Madisetty ”


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