The "Tampering Detected" error is an anti-cheat measure built into the game. When the game launches, it performs a check to ensure the game files and memory have not been modified. If it detects an anomaly, it blocks the game from starting to prevent unfair advantages in multiplayer.
: Manually update your Microsoft Visual C++ Redistributables to ensure all system dependencies are current. age of empires 2 definitive edition tampering detected fixed
: Some users found that removing and reinstalling the "Xbox" and "Gaming Services" apps via the Windows "Add or remove programs" menu forced a necessary update that cleared the error. The "Tampering Detected" error is an anti-cheat measure
You need to tell your antivirus to leave AoE2 alone. age of empires 2 definitive edition tampering detected fixed