How to tell what version of AD you have.

1

Category : microsoft, technology

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There are quite a few ways to tell. Here are a few I found.

The correct version of the ADPrep.exe tool for Windows Server 2003 R2 is 5.2.3790.2075.
You can verify the operating system support level of the schema by looking at the value of the Schema Version registry subkey on a domain controller. You can find this subkey in the following location:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NTDS\Parameters

You can also verify the operating system support level of the schema by using the Adsiedit.exe utility or the Ldp.exe utility to view the objectVersion attribute in the properties of the cn=schema,cn=configuration,dc=<domain> partition. The value of the Schema Version registry subkey and the objectVersion attribute are in decimal.
Schema Version ObjectVersion values and corresponding operating system support level

  • 13=Microsoft Windows 2000
  • 30=Original release version of Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 (SP1)
  • 31=Microsoft Windows Server 2003 R2
  • 44=Windows 2008

******OR*********

adfind -sc schver. It gets objectVersion code and translates into Win2003 version.

******OR*********

Win2003 http://technet.microsoft.com/en-us/library/cc783495.aspx

To verify that the Active Directory Preparation tool has completed all operations successfully

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Active Directory &amp; Exchange Schema Versions

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Category : Post from around the Net, microsoft, technology

This is some incredibly usefully information. I’m posting this just for my own need.

If you are running into environments and working on aspects of them such as Exchange, OCS, PKI, or other Active Directory integrated applications, you will encounter situations where you may need to update the AD schema. Of course, the first question is, what version am I at today?

Here’s a handy way to find out:

Query for the objectVersion attribute of the CN=Schema,CN=Configuration,DC=yourdomainhere of your Active Directory domain and compare the value to the table below.

I’ve provided links to the schema update information (where available), if you are curious as to what is updated in each.

objectVersion
AD Schema Update

13
Windows 2000 Server

30
Windows Server 2003 **

31
Windows Server 2003 R2

44
Windows Server 2008

** The Windows Server 2003 upgrade from 2000 also adds the CN=Windows2003Update,CN=ForestUpdates,CN=Configuration,DC=yourdomainhere and sets its revision attribute to 9. This hasn’t been used again, yet.

Exchange Server saves the current version of its schema updates in an attribute of two locations.

For /forestprep operations, query the rangeUpper attribute of the CN=ms-Exch-Schema-Version-Pt,CN=Schema,CN=Configuration,DC=yourdomainhere object.

For /domainprep operations, query the Microsoft Exchange System Objects object in each domain for its objectVersion value.

The table below provides the number to version translation.

Value
Exchange Version

4406
Exchange 2000 Server

6936
Exchange Server 2003

10628
Exchange Server 2007

Active Directory & Exchange Schema Versions

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