Project is to migrate Windows SBS 2003 to Windows 2012 and Exchange 2013.
1. Migrated AD to Server 2012, Success.
2. Migrated Exchange to 2010, Success.
3. Attempted to un-installed Exchange 2003, failed.
4. Demoted SBS 2003 Server, Success.
I have a Windows 2012 Domain with a functional Exchange 2010 server. I now need to migrate to Exchange 2013 and can not. Exchange 2013 throws an error that Exchange 2003 still exists.
How can I strip out Exchange 2003 from AD so Exchange 2013 will be happy and not damage Exchange 2010 in the process?