Origin/Sims 4 Won't Launch

@RicoziCrazy  Just to clarify, you own the base game in Steam, right?  (Let me know if you own it in Origin and have only added to Steam as a non-Steam game.)  Please try running both Origin and Steam as an admin, and make sure you're signed into Origin with the account that's linked to the Steam account that owns the game.  Even if you think you are, please check anyway: go to ea.com, click the sign-in button, then choose to sign in with your Steam account and see which Origin account opens.  That's the one you need to use in Origin.

It's just EA's * service. Origin is such a joke, if I bought the game through steam I have 0 ideas why they need Origin to interfere. It is absolutely the worst service available, and that is unfortunately a fact proven by countless of internet threads. Good luck getting it to work, been having this problem since I shelled out over a hundred dollars on the summer sale for EA games, all of which are probably going to end up refunded at this point.