: Some monitoring software (like EVGA Precision or certain screen recorders) can conflict with the game's launch. Try disabling them before starting GTA IV. : If you are on the Steam version, use the Verify integrity of game files

Download the latest version of the from the official website.

located in the game's root directory to ensure the necessary background processes and launchers (like the Rockstar Games Launcher) initialize correctly. Enable Compatibility Mode Navigate to your game installation folder (usually within SteamLibrary\steamapps\common\Grand Theft Auto IV\GTAIV Right-click LaunchGTAIV.exe ) and select Properties Compatibility "Run this program in compatibility mode for" and select "Run this program as an administrator" Update Graphics Drivers

Check the box for and select Windows 7 or Windows Vista (Service Pack 1) from the dropdown. Check the box for "Run this program as an administrator" . Click Apply and try launching the game again. 2. Verify Game Files

For a step-by-step visual guide on fixing the RMN60 error and other launch issues in GTA IV: