Question

I'm using Windows Vista and get an Error Code of RMN20 when I launch the game. What do I need to do?

Answer

Windows Vista SP1 is required to play GTA IV PC. Download the appropriate file you need. 

Windows Vista 32-bit SP1

Windows Vista 64-bit SP1

Please note that these downloads are over 400MB and the installation can take up to an hour or more.

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