If you’re trying to launch and are greeted by a "Procedure Entry Point Not Found" error specifically mentioning ail_set_stream_volume@8 , you aren't alone. This is a classic compatibility hurdle for the original retail and Steam versions of the game on modern Windows operating systems.
Steam and some retail copies include a second executable that often works better on modern Windows. Go to your Grand Theft Auto Vice City installation folder (In : Right-click game > Browse local files gta-vc.exe and rename it to gta-vc_OLD.exe testapp.exe in the same folder and rename it to gta-vc.exe Launch the game normally. Secondary Fixes If you’re trying to launch and are greeted
This is usually not a standard in-game error, but rather something that appears when using , audio replacement tools , or custom scripts (like CLEO, Sanny Builder, or audio-related mods). Go to your Grand Theft Auto Vice City