Error to start Unreal Engine 4.14.3

Hi, I have not already installed Unreal Engine 4.14.3 more when I click on start it is 5 seconds waiting and then back on the start button there I click on again to start waiting 5 seconds and back again, can someone help me?

Do you mean that the Launch button doesn’t launch the engine?

122956-screen+shot+2017-01-20+at+1.15.49+pm.png

Cleancut, YES

CleanCut YES

Yes, is it

Hmmm. I wonder if this might be a launcher issue. For launcher issues Epic Staff will tell you to go to http://help.epicgames.com/