Download and install the latest (all-in-one package) from Microsoft’s official website. Also ensure Xbox Identity Provider and Epic Online Services are installed if the game requires them.
The primary culprit behind Error 225 is the collision between the unauthorized code of the "Online Fix" and the security protocols of the host machine. A DLL file injected into a game to bypass DRM or redirect server traffic behaves, structurally, very much like a virus or trojan. It hooks into processes, intercepts calls, and modifies data flows on the fly. failed to load onlinefix64.dll error code 225
Ошибка onlinefix64.dll в играх — способы исправить Download and install the latest (all-in-one package) from