: Completely close apps like Discord, NVIDIA GeForce Experience, or specialized monitoring software (e.g., Faronics Insight) before launching the game.
Even trainers used for single-player must be carefully set up. The official AoE support page notes that it can manifest for Microsoft Store users but also for Steam users, and the detection is aggressive.
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Which platform are you using? ( or Xbox App / Microsoft Store )
"A running process may be interfering with the correct operation of AoE2 DE. This may be caused by anti-virus software, malware, game overlays, or other active processes on your PC" Steam Community : Completely close apps like Discord, NVIDIA GeForce
Ensure that AoE2DE_s.exe is granted full access through your Windows Defender Firewall. 4. Disable Background Overlays and Hooking Software
Completely close apps like MSI Afterburner, RivaTuner Statistics Server (RTSS), or EVGA Precision X1 before launching the game. 4. Manage Game Mods This public link is valid for 7 days
"Tampering detected" - II - Discussion - Age of Empires Forum
Did this error start happening after a specific or mod installation ? Are you running any third-party antivirus software? I can provide specific instructions based on your setup. Share public link
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.