Endless Update Looping
This issue is now obsolete as Origin was replaced by EA app.
Origin in Game doesn’t work
This issue was fixed.
Game starts in small window and doesn’t react
This issue was solved
Installation through Digital Download
How to install your game as digital download through Origin.
General troubleshooting steps you can try if you run into issues and the game doesn't run as it should.
Known installation- and start problems briefly explained with links to more detailed posts.
Installing from DVD
How to install your game from a DVD - This method is no longer recommended due to the amount of patches released.
The Sims 4 – EA app/Origin Version
Answers to some questions about Sims 4 bought through EA app/Origin