Browse to your Grand Theft Auto 4 installation folder (Usually C:\Program Internet Explorer 9 (beta version) prevented GTA IV from launching for me as well . when trying to play GTA IV. Application Failed to Launch. The application you are attempting to launch failed to start. GTA IV may be blocked by. GTA4 LAUNCHER (GTA IV) - rrg475lj0.ga - Grand Theft Auto News, Downloads, Community Next, while the loader is running; start GTAIV. For those of you trying to launch GTA IV on Windows 10 without anything happening when pressing 'play', I finally found the fix here. Download your game from steam in window 10; Because your game version is so you need to downgrade your game version to --> Go to the installation folder: ./SteamLibrary\steamapps\common\Grand Theft Auto IV\GTAIV. (if it's not on steam --> Default C:/Program Files/Rockstar Games/Grand Theft Auto IV) Anyway I've set the game like this and now I'm playing gta 4 PERFECTLY.