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Active Directory schema version numbers

Posted by bartvdw on 2525/0101/2011

Update 13/06/2012: Added version number for Windows Server 2012 RC

  • 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 RTM = Schema version 56

You can check the version in the registry:

  • Registry: HKLM\SYSTEM\CurrentControlSet\Services\NTDS\Parameters\<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

How to find the current Schema Version
http://support.microsoft.com/kb/556086

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5 Responses to “Active Directory schema version numbers”

  1. SysAdmin-E said

    Thanks for the info. MS needs to update KB 556086 to show the lastest schema version for Server 2008 R2 SP1 (47) and Exchange Server 2010 SP1 (14726).

  2. RandyS said

    Thanks for a clear description. Microsoft’s own KB article fails to mention “right click – Properties”.

    Schema level 47 is still valid even for production Server 2008 R2 with SP1.

  3. bartvdw said

    Updated with Windows Server 2012 RC version number information!

  4. [...] found a couple of decent articles that are up-to-date, for Exchange here and for AD here.  Exchange 2013 RTM has a forest rangeUpper value of 15137 as indicated [...]

  5. Cody Kniffen said

    For those wondering, Server 2012 R2 = Schema version 69

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