I gave up on this issue as it wont install on several PC's. They using Windows Defender & 2 of them was updated from Windows 7 & other Clean Install. I Rolled back to Windows 7 & other I took all updates out & try it again but same error on clean install.. On 2 of my others it installed but made PC's slow as hell. Those PC have AVG 2016 Internet Security & after update it enabled Windows Defender & when you shut it off after reboot it enables again. I uninstalled the update on those 2 PC's & all fine but it auto installs it again. Is there a way to disable this update & hide it. Seems Windows 10 isn't stable yet.