Dear Experts,
We are in the middle of testing a migration of an SBS 2011 (running Exchange 2010) over to Server 2012 R2 with Exchange 2013 installed. Trying to install Exchange 2013 on our new 2012 R2 (setup as a replica server in the existing SBS domain) but it always fails with an error:
“One or more servers in the existing organization are running Exchange 2000 Server or Exchange Server 2003. Installation can’t proceed until all Exchange 2000 or Exchange 2003 servers are removed.”
We definitely don’t have any 2000 or 2003 Exchange Servers in our environment. Having run an Exchange BPA, we see an old reference to the old SBS 2003 which used to run Exchange 2003. How can we remove entries to this so that we can install Exchange 2013?
Cheers, Oliver