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You not need to update the Active directory Schema as it must be already updated as you have already SP2 installed before, however you can check out this for your reference. <br />
<br />
<a href="http://technet.microsoft.com/en-us/library/aa996719(EXCHG.80).aspx" rel="ugc">http://technet.microsoft.com/en-us/library/aa996719(EXCHG.80).aspx</a><br />

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You not need to update the Active directory Schema as it must be already updated as you have already SP2 installed before, however you can check out this for your reference.

http://technet.microsoft.com/en-us/library/aa996719(EXCHG.80).aspx [http://technet.microsoft.com/en-us/library/aa996719(EXCHG.80).aspx]


<div>
as mentioned above, but make sure to solve any existing issue before going to upgrade..<br />
<br />
Run ExBPA ...see errors ( if any), solve them then go to upgrade.
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as mentioned above, but make sure to solve any existing issue before going to upgrade..

Run ExBPA ...see errors ( if any), solve them then go to upgrade.

<div>
As others say,no need to any update on windows. I do recently the same upgrade.. A little notification; just be sure that you have enough disk space..<br />
Regards,
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As others say,no need to any update on windows. I do recently the same upgrade.. A little notification; just be sure that you have enough disk space..
Regards,

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I am upgrading my Exchange 2007 SP2 server to SP3. &nbsp;Do I need to upgrade the Active Directory schema or can I just run the SP3 setup?<br />
<br />
I am running Exchange on Server 2008 Enterprise and I only have one Exchange Server.<br />
<br />
Thanks,<br />
Ben 
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I am upgrading my Exchange 2007 SP2 server to SP3.  Do I need to upgrade the Active Directory schema or can I just run the SP3 setup?

I am running Exchange on Server 2008 Enterprise and I only have one Exchange Server.

Thanks,
Ben 

Exchange 2007 upgrade from SP2 to SP3.

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.