http://blogs.technet.com/b/activedirectoryua/archive/2011/07/07/forest-schema-version-47-windows-server-2008-r2-adprep-forestprep.aspxWhen you run adprep /forestprep, you are updating the Active Directory schema forest version. Several people have asked, what is the forest schema version for Windows Server 2008 R2. To learn more about adprep and forestprep and schema versions, readen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/activedirectoryua/archive/2011/07/07/forest-schema-version-47-windows-server-2008-r2-adprep-forestprep.aspx#3572597Tue, 14 May 2013 15:13:21 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3572597David<p>The objectVersion attribute will display &lt;not set&gt; on any DC other than the schema FSMO role holder in ADUC and/or ADSI Editor...</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3572597" width="1" height="1">http://blogs.technet.com/b/activedirectoryua/archive/2011/07/07/forest-schema-version-47-windows-server-2008-r2-adprep-forestprep.aspx#3470367Mon, 12 Dec 2011 17:41:44 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3470367Davanand Bahall - MSFT<p>No it does not.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3470367" width="1" height="1">http://blogs.technet.com/b/activedirectoryua/archive/2011/07/07/forest-schema-version-47-windows-server-2008-r2-adprep-forestprep.aspx#3464441Thu, 10 Nov 2011 14:09:34 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3464441SysAdmin-E.com<p>Does SP1 for Windows Server 2008 R2 change the schema version? I noticed that the schema version does increase when going from non-R2 to R2 in both WIndows Server 2003 and 2008. Thanks.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3464441" width="1" height="1">