Corrupt files

Please forgive me if this is the wrong thread.but today 11/14/14 I opened horizon said it needed an update to 2.8.3.0 download update go to set it up windows won’t let it load click more info says unknown publisher I click run anyway it says corrupt files please download from another source.so i tried uninstalling and reinstalling horizon same thing so I try saying no to the update and now I have to run in offline mode and can’t use diamond tools…worst part just tried to save some game info horizon stops responding while writing and wipes out my flash drive good bye profile and game saves but I got my profile back and have the game saves backed up,just need help with this update issue.So any and all help will be greatly appreciated.

Uninstall Horizon again from your control panel and download the latest version Here.
It should install perfectly for you, but if you still have issues let us know. Good luck.