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I have a Active Directory Mistmatch how do I fix this?

I have 2 x 2008 R2 Domain Controllers and a 2008 Domain Controller and I was trying to add a 2012 R2 Domain Controller.

The Schema Version of my domain is 69 on one of the 2008 R2 DCs and 47 on all my other DCs.

How do I fix this so I can add a new DC?

  • that doesn't sound right. There is only one AD Schema Version... Or are those different domains? – MichelZ Aug 9 '14 at 13:06
  • Same domain. I need to update the schema version for all domain controllers but I don't know how? – Simon Foster Aug 9 '14 at 13:11
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    That's the point, you do not upgrade the schema on domain controllers, just on the whole domain. If a domain controller does not report the highest schema version, then you have an Active Directory replication problem, and I suggest you check the replication – MichelZ Aug 9 '14 at 13:14
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    support.microsoft.com/kb/2734946 is the error I am getting – Simon Foster Aug 9 '14 at 14:50
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No need to waste time for searching.

  1. Demote Outdated domain server
  2. Metadata cleanup
  3. Promote it again

remove broken domain controller

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    A good answer need more explanation than that. – kasperd Apr 22 '15 at 14:34
  • What part of my answer is not clear to You ? – integratorIT Apr 22 '15 at 14:51

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