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Fixing Issue With Identical SID On Domain Join

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We run into this issue when copying virtual servers. The below instructions will help you correct this issue quickly.

Fixing Issue With Identical SID On Domain Join Error Message

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Computer Name/Domain Changes
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The following error occurred attempting to join the domain "company":

The domain join cannot be completed because the SID of the domain you attempted to join was identical to the SID of this machine. This is a symptom of an improperly cloned operating system install. You should run sysprep on this machine in order to generate a new machine SID. Please see http://go.microsoft.com/fwlink/?LinkId=168895 for more information.
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OK
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How To Fix This Issue

As indicated, you need to run sysprep on the machine.

  1. c:\Windows>cd c:\windows\system32\sysprep
    Locating sysprep in the command window.
  2. c:\Windows\System32\Sysprep>Sysprep /generalize /shutdown /oobe
    Locating sysprep in the command window.

After the above command runs the machine will reboot and you should be good to go.