How to migrate from SBS 2003 R2 Premium to Windows Server 2012 R2 (Essentials) Delete the "Log on as service" account setting, raise functional level, synchronize time with an external source, create a replica DC and transfer operations master roles. Uninstall Exchange Server 2003 before you demote the SBS 2003 migration, fsmo, dcpromo, replica, sbs 2003 end of life, sbs 2003 migration kit Read More