This is baffling, because MSSE isn’t designed to work with Windows 10 (it doesn’t work), and plus, it precludes the use of Windows Defender, which is essentially the Windows 10 upgraded equivalent of MSSE. Recently, I encountered two different workstations that had upgraded to Windows 10 from Windows 7 on which Microsoft Security Essentials inexplicably was not uninstalled during the upgrade process by Windows Setup.
