Invalid Game License - The Sims 4

Letiyy01  What antivirus do you use?

Separately, have you ever claimed any Sims 4 content through Steam or Epic?  Do you live in a different country than the one where you originally bought or claimed Sims 4 from EA?

This error is becoming alarmingly common, and the system troubleshooting hasn't helped anyone yet as far as I know, so I'm wondering whether there's a hidden account issue.

Another test, if you're interested, would be to borrow a friend's account and test it on your machine.  Since the game is free, it's simple enough to add it.  I'd suggest doing a clean uninstall of Sims 4 and the EA App with Revo Uninstaller (the free version is fine) before using the new account.  Rename the Sims 4 folder in Documents > Electronic Arts to something that doesn't include "Sims 4" so that Revo doesn't flag it for deletion.

Hi there, Letiyy01 Have you also error code EC:204?
It comes out when you try to play offline "invalid licence" 
There's an issue reported, check it out: https://answers.ea.com/t5/Bug-Reports/NEW-Oct-2024-EA-app-and-Error-Code-EC-204/td-p/14126582  

This EC:204 problem was resolved with an update to the EA App about 18 hours ago.

The app should update automaticly so next you want to play you can launch the game in offline mode again.

All good, and a thank you to the team who got onto this so fast.