FusionFix is a mandatory community patch designed specifically for Grand Theft Auto IV: The Complete Edition. It repairs broken features introduced by official patches.
The Complete Edition is officially available through the Rockstar Games Launcher or Steam. Method 1: Installing via Steam (Recommended)
This patch breaks 90% of old mods (scripthook.dll versions pre-2024). If you want mods, you must use the updated Ultimate ASI Loader for v12032. grand theft auto iv the complete edition v12032 install
The v1.2.0.32 patch brought specific technical changes to the game. Most notably, it removed the infamous and problematic Games for Windows Live (GFWL) software, which often prevented the game from launching or saving progress. However, this update also removed the multiplayer mode and leaderboards.
Due to expired licensing, some iconic tracks from the original radio stations (like Vladivostok FM) were removed or replaced in this update. How to Install GTA IV: The Complete Edition v1.2.0.32 Method 1: Installing via Steam (Recommended) This patch
This guide provides a step-by-step walkthrough for installing GTA IV: The Complete Edition v1.2.0.32 on Windows 10 and Windows 11.
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Navigate to your main installation folder (e.g., Steam\steamapps\common\Grand Theft Auto IV\GTAIV ). Create a new text file named commandline.txt . Paste the following lines into the document and save it: -availablevidmem 4096 -norestrictions -nomemrestrict Use code with caution.
Open the file and insert the following parameters, then save it:
Launch the Rockstar Games Launcher on your PC.
The GOG version of GTA IV is not v1.2.0.32 — GOG removed multiplayer and uses a different patch scheme. So v1.2.0.32 is specific to Rockstar/Steam/Epic.