The good news is that solves the problem permanently for 90% of users. If you are uncomfortable editing the registry, Method 2 (Installing Legacy Origin) is your best bet.
And the cruelest part? The error often appeared after you’d already played 20 hours of Career Mode. One day, the game just decided your PC was lying about having Origin. fifa 14 origin not installed
Are you using a physical disc, a digital copy through the EA app/Steam, or a cracked version of the game? How to fix the "Origin not installed" error in FIFA? The good news is that solves the problem