I'm working in a single server environment. I have Windows 2008 with Exchange 2007 SP2 installed.
i just installed E2007 SP2 (no reboot)
Now I am trying to install Exchange 2010 and getting the following error during SETUP:
A previous version of Exchange Server is already installed on this machine
i thought both could co-exist on the same server & once i migrated my mailboxes i could uninstall 2007?