Verifying your game files may resolve installation corruption that prevents you from being able to play your game.
To verify the installation of game files, please Click here. This link will take you to the Epic Games site with the latest steps on how to troubleshoot this issue.
Depending on the size of the game it may take a few minutes to verify all your files. Once it completes click Launch to start your game.
If you need further help, please contact Epic Games Support here.