Exchange 2010 sp3, 2008 R2 domain level
my AD and Exchange are all on VM. if i make a snapshot of all my Exchange 2010 servers, upgrade them to 2013, made a mistake, can we still go back to Exchange 2010 as if nothing has happened? i mean from the users point of view.
or will upgrading to Exchange 2013 do some changes in AD that going back or restoring the image snapshot of Exchange 2010 will not be possible anymore?