I installed UE and it is a FFV file, and which application should I open UE4 with?

Hi AllyH123 -

The file should download from your account page as an *.MSI file (Windows) or a *.DMG file (Mac). Try to go to your account page again and confirm that you are getting a link from the Download buttons as a *.MSI file or *.DMG file and if so re-download

Thank You

Eric Ketchum

Hi AllyH123 -

From your other question, here, it sounds like you might have solved this issue but are still having issues installing the engine itself. So your launcher runs fine but you cannot install the engine itself. I have reopened the previous issue that I had closed, but I will be happy to help you in either location. Just let me know -

Thank You and sorry for the confusion on my part,

Eric Ketchum