Deinstallation Acronis Backup 11.7?
is it necessary to deinstall Acronis Backup 11.7 before installing Acronis Backup 12?
Acronis Backup 11.7 can be upgraded directly to Acronis Backup 12 without uninstalling 11.7 first. Note that this applies to non-Advanced edition of Acronis Backup 11.7 only (Advanced editions cannot be upgraded yet). See also https://kb.acronis.com/node/57721 for more details.