Security software may have quarantined critical DLL files like uplay_r1_loader.dll , mistaking them for threats.
The launcher lacks the necessary permissions to access system-level libraries. How to Fix "uplay-ach-earnachievement" Not Found 1. Reinstall Ubisoft Connect (The Most Effective Fix) uplay-ach-earnachievement could not be located
You are using an old version of Uplay that does not support the achievement functions required by newer games. Security software may have quarantined critical DLL files