Re: Unknown Error EC:203 in EA app

SIMPLE FIX
(That worked for me)

No messing around with security settings.

All you need to do is:

• Open the task manager (Ctrl + Shift + Esc, or Ctrl + Alt + Delete and select task manager)
• In the bottom left of the window, click the button for "More Details"
• Now locate the the "EA" app and the "EA Background Service". They'll have the same logo that you're used to see.
• End these two tasks with the "End Task" button in the bottom right after selecting them one at a time.

Now relaunch the EA app and the game, and it should work as intended. It did for me, anyway.