Fixed: Age Of Empires 2 Definitive Edition Tampering Detected

File Mismatch: data\barbarian.ai (or) External Hook: Razer Synapse

: Turn off "App & browser control" and "Tamper Protection" within Windows Defender to see if the system-level security is causing the interference. Platform-Specific Solutions Required Actions Steam

Click on the (Options) in the top-right corner, then select Mods . Go to the Installed Mods tab. Uncheck all active mods to disable them completely. Restart the game to see if the error persists. age of empires 2 definitive edition tampering detected fixed

Are you encountering this error on or the Microsoft Store version?

Locate the folder corresponding to your Steam ID, then find folder 813780 (the AppID for AoE2:DE). Delete the local cache inside it. Restart Steam and allow it to sync fresh data. Final Thoughts File Mismatch: data\barbarian

(AoE2 DE) is a security mechanism designed to prevent external processes from modifying game data. However, it often triggers falsely due to common software like antiviruses, overlays, or account sync issues.

: Open the game, select your Xbox profile icon (top right), log out, close the game, and then log back in upon restarting. Disable Steam Overlay Properties and uncheck "Enable the Steam Overlay while in-game". For Microsoft Store / Xbox App Users Logout Cycle : Close the game, log out of both the Microsoft Store Uncheck all active mods to disable them completely

Only if you want a completely plug-and-play experience with zero troubleshooting.

Launch the game and log out/unlink your from the top-right menu.