Ensure the MD5 checksum matches official historic releases.
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Point the tool to your current GTA IV installation folder (e.g., Steam\steamapps\common\Grand Theft Auto IV\GTAIV ). Ensure the MD5 checksum matches official historic releases
Install the latest Microsoft Visual C++ Redistributable packages and run the game's .exe file as an Administrator. gta iv 1.0.4.0 download