LaunchGTAIV.exe is obsolete for modern systems due to Games for Windows Live and SecuROM. To run GTA IV on Windows 10/11, users should:
If you have followed this entire guide and the file is still missing, consider a . Back up your save games from Documents\Rockstar Games\GTA IV\savegames , uninstall the game, delete the leftover folder, then re-download from your official source.