Hi there, This is Marc. Thank you for reaching out Microsoft Community. I'm here to help.
Thanks for providing those details. Based on what you've described, here are a few approaches we can try.
You are seeing this message because Easy Anti-Cheat (easyanticheat.exe and easyanticheat_eos.exe) used by many Epic Games titles is not compatible with Kernel-mode Hardware-enforced Stack Protection in Windows 11.
Option 1: Uninstall Easy Anti-Cheat (and related games)
> Uninstall any Epic Games titles that use Easy Anti-Cheat.
> Remove Easy Anti-Cheat from your system (it is usually uninstalled with the games).
Option 2: Keep Easy Anti-Cheat and Leave the Feature Disabled
> If you want to continue playing games that require Easy Anti-Cheat, you must leave Kernel-mode Hardware-enforced Stack Protection turned off.
> This is the only way to keep both your games and system running without errors for now.
There’s nothing wrong with your device — it’s just a current software compatibility limitation.
Best,