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exchange 2010, forest functional level

Posted on 2010-11-17
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Last Modified: 2012-05-10
I have been looking for some help on this topic for a few days so I thought I would re-open.  If anyone has had this problem or knows what I can do please advise.

I have a single Windows 2003 server running Exchange 2003 and it is healthy.  I setup a second server with Windows 2008 on one virtual machine and a second windows 2008 for a second vm.  The first vm I added as a Domain controller and setup this as the FSMO.  Next I am trying to add Exchange 2010 to the second VM.  I have been following all kinds of posts here but I keep coming back to the problem that Exchange will not install until I get the forest functional level up.  Now I can see where my forest level is Windows 2003 but I guess I am missing something.  

Here is what I continue to see.

To update the domain functional level, the Active Directory Domain Controllers in the domain must be running the appropriate version of windows.

domain Name
iris.local

Current domain functional level
Windows Server 2003

The following Active Directory Domain Controllers are running earlier versions of windows:
domain Name      AD DC      Version of Windows
iris.local      mail-svr.iris.local      Windows Server 2003 5.2 (3790)

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Question by:bhgewilson
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Glen Knight earned 500 total points
ID: 34154186
The details of how to change the forst functional level can be found in my article here (Step 3): http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_2881-Migrate-Small-Business-Server-2003-to-Exchange-2010-and-Windows-2008-R2.html

This article provides step by step instructions on how to migrate from 2003 to 2010
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by:bhgewilson
ID: 34154194
Well guys I have been battling this for days.  This morning I took both domain controllers down and turned them off.  I brought up the new one and then the old one.  I started it again and it went through.  Seems I was having some replication issues.  thanks for the help and I have been following this article for a while now.  
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