: You must run the trainer ( GTAVC Trainer.exe or similar) before or after starting the game, depending on the trainer version.
If you ever mess up your controls and want to reset them to default, deleting this file is the solution. The next time you launch the game, it will create a fresh gta_vc.set file with all the default key bindings. Be careful not to delete your saved game files ( .b files) that are stored in the same folder!
Go to your GTA Vice City User Files folder. Right-click keys.dat , select Properties , uncheck Read-only , and click Apply . 2. Broken Mouse Control (The Windows 10/11 Bug)
If you're looking for information on the "keys.dat" file in relation to Grand Theft Auto: Vice City (GTA VC), here's what you need to know: keys.dat gta vc
The keys.dat file in is not a standard file in the original retail game but is a critical configuration file associated with the GTA Vice City Ultimate Trainer . What is keys.dat?
The modern remaster does not use the old binary keys.dat system. Instead, it relies on modern Unreal Engine engine configuration files (like GameUserSettings.ini ). Common Issues and How to Fix Them
The keys.dat file is the dedicated configuration file that stores your in GTA Vice City. : You must run the trainer ( GTAVC Trainer
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: Sets up how the mod interacts with the game's executable ( gta-vc.exe ). How to Use It
: It acts as a "key map" so the trainer knows which button (e.g., F1 , Tab + 1 ) triggers a specific cheat. Be careful not to delete your saved game files (
Delete the keys.dat file entirely. The next time you launch GTA Vice City, the game will automatically generate a fresh, uncorrupted version of the file. 3. Controller Mapping Conflicts
: Run the trainer as an Administrator to ensure it has the rights to read the .dat file and interact with the game.
| Symptom | Cause | Solution | |---------|-------|----------| | Controls revert to defaults on every launch | keys.dat is or located in a write-protected directory (e.g., Program Files on modern Windows). | Run game as Admin or move installation outside of Program Files . | | Specific key does nothing; others work | Corrupted byte at that action’s offset (e.g., 0x00 stored instead of valid scancode). | Delete keys.dat (regeneration fixes) or manually hex-edit. | | Mouse axis inverted (e.g., look up/down swapped) | Not stored in keys.dat ; controlled by SET FILE or gta_vc.set in Documents . | keys.dat is not the culprit. | | Game crashes on Options → Controller Setup | Very rare; indicates full disk or file permission error. | Check free space and file permissions. |
: If you just downloaded the mod, make sure to extract all files from the zip/rar folder rather than running the trainer directly from the archive.