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Active Directory schema version numbers

I thought it would be a good idea to share with you a list of Active Directory schema version numbers

  • Windows 2000 RTM with all Service packs = Schema version 13
  • Windows Server 2003 RTM with all Service packs = Schema version 30
  • Windows Server 2003 R2 RTM with all Service packs = Schema version 31
  • Windows Server 2008 RTM with all Service packs = Schema version 44
  • Windows Server 2008 R2 RTM with all Service packs = Schema version 47
  • Windows Server 2012 RC = Schema version 56

You can check the version with one of the following methods.

  • Registry: HKLMSYSTEMCurrentControlSetServicesNTDSParameters<Schema Version>
  • dsquery: dsquery * CN=Schema,CN=Configuration,DC=Root-Domain -Scope Base -attr objectVersion
  • ADSIEdit: open ADSIEdit and navigate to “CN=Schema,CN=Configuration,DC=domain,DC=local”, right-click “Properties” and locate “objectVersion” attribute value

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