MSE (Microsoft Security Essentials) is available for small businesses with up to 10 PCs. Targets may need to be restarted. Will not run on XP, Windows 8.x, Windows 10 or Server 2012. Return code 327424 or 327472 = Successful Needs Reboot - 327426 = Already Installed. Return Code -2147156213 means Windows hasn't been activated or the WGA validation failed.
Package Library Subscription Level Pro
Package Library availability for Microsoft Security Essentials: