Add the entire AoE2DE installation directory to the exclusion list.
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Navigate to > Exclusions .
Right-click on and select Properties . Navigate to the Installed Files tab. Click Verify integrity of game files .
This error is triggered by the game's built-in anti-cheat system. It happens when the system detects modified, corrupted, or unexpected files in the game directory. age of empires 2 definitive edition tampering detected
The game's anti-cheat and security measures often flag standard software as potential threats:
Aggressive file system monitors often scan active game files mid-match, prompting an anti-cheat lockout.
Discord Overlay, NVIDIA GeForce Experience Overlay, MSI Afterburner (RivaTuner), Logitech G-Hub, and even RGB control software (Corsair iCUE, Razer Synapse) inject code into the game to display FPS or colors. Age of Empires 2: DE is notoriously sensitive to this. If the game sees an external process writing to its memory, it assumes tampering.
You’ll be playing a single-player campaign, a skirmish against AI, or even trying to start a multiplayer match, and suddenly the game locks you out, displaying a message that file tampering has been detected. Often, it forces you to restart or disables achievements and save files. Add the entire AoE2DE installation directory to the
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The "Tampering Detected" error in Age of Empires II: Definitive Edition (AoE2: DE) can immediately disrupt your gaming session. This error occurs when the game’s built-in anti-cheat system or file validation integrity scanner detects unauthorized changes to the core game files. It can happen during startup or right as you try to join a multiplayer match.
Right-click on and select Properties . Navigate to the Installed Files tab. Click Verify integrity of game files . Wait for Steam to download any missing or corrupted files. For Microsoft Store / Xbox App Users: Open the Xbox App on PC.
If all else fails, a complete scrub of the game directory ensures no residual, corrupted files remain hidden. Uninstall the game via Steam or the Xbox App. If you share with third parties, their policies apply
If you cannot open the game menu, or if disabling mods via the UI doesn't work, you may need to delete the local mod folders manually. Press Windows Key + R to open the Run dialog box.
The fix can sometimes depend on where you bought the game. The official support page from Age of Empires provides these tailored solutions.
The "Tampering Detected" error in Age of Empires II: Definitive Edition abruptly crashes the game. It usually happens right at launch or while joining a multiplayer lobby.
This fix solves the error for 40% of users. You must close background processes.
