The game has detected a file mismatch or third-party hook.
Are you experiencing this error or randomly during multiplayer matches?
If you have an NVIDIA GPU, this is likely your culprit.
The error in Age of Empires II: Definitive Edition (AoE2: DE) typically occurs when a third-party process—such as antivirus software, game overlays, or student monitoring tools—interferes with the game's executable (
