The remaster uses a different input system; keys.dat is not present in the same way. This post applies to the original PC release .
Because keys.dat was designed for older Windows architectures (like Windows 98 and XP), modern operating systems often run into conflicts with it. 1. Mouse Clicks and Movements Not Registering
A notorious issue in the classic PC version of Vice City is the mouse freezing up completely. While you can click in menus, you cannot look around in-game. This happens because modern multi-core processors confuse the game’s input polling. Delete the keys.dat file. gta vice city keys.dat
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Understanding gta vice city keys.dat: Functions, Fixes, and Editing The remaster uses a different input system; keys
keys.dat is missing, corrupted, or write-protected. Fix:
These mods redirect the file's input hooks through modern DirectInput channels, permanently fixing mouse issues. 3. Controller Mapping Conflicts and Editing keys.dat is missing
For modders and technical users, a Hex Editor (like HxD) can read the specific byte offsets that correspond to in-game actions (e.g., accelerating, shooting, looking behind). Each key on your keyboard is represented by a specific hex code (DirectInput scan codes). Changing these values allows for deep customization, though it is tedious and prone to human error. 2. Community Tools and Control Fixes
| Version | Path | |---------|------| | | C:\Program Files\Rockstar Games\Grand Theft Auto Vice City\keys.dat | | Steam Version | C:\Program Files (x86)\Steam\steamapps\common\Grand Theft Auto Vice City\keys.dat | | Rockstar Launcher | C:\Program Files\Rockstar Games\Grand Theft Auto Vice City – The Definitive Edition\ (Note: Definitive Edition uses a different system; keys.dat is less relevant there) | | Modded/Re-Release | Same as above; if missing, check C:\Users\[YourName]\Documents\GTA Vice City User Files\ (unlikely— keys.dat is rarely in Documents) |
The safest way to modify this file is through the game itself. Go to Options > Controller Setup > Redefine Controls . Changes made here are written to keys.dat upon exiting the menu or the game.
If you're using a digital distribution platform like Steam, use its built-in file verification tool to ensure your game files are not corrupted.