Since both Windows 2003 server and Exchange 2003 change the schema, which one goes first? Do I upgrade the domain controller first and have that write its schema changes, or do I upgrade Exchange 2000 to Exchange 2003 first?
I've read some articles that say Exchange 2003 cannot operate in a Windows 2000 environment, so therefore you have to upgrade Exchange first. Yet, some articles say that you need at least one domain controller upgraded to 2003.
Can you please let me know what to do first, the domain controller or Exchange?
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This was first published in May 2006