sims 4 unable to start because game data is missing
@C-Metheuver What antivirus do you use, and have you set exceptions for Sims 4 (TS4_x64.exe) and the EA App? If not, that's the first thing to do; run another repair when you're done.
If that doesn't help, please do a clean uninstall and reinstall of Sims 4:
- Rename the Sims 4 folder you moved out of Documents\Electronic Arts (that has your old saves inside it) to something that doesn't include the words "Sims 4."
- Download Revo Uninstaller (the free version is fine) from here.
- Launch Revo, select Sims 4 from the list, and click Uninstall.
- Once the game is uninstalled, select "Moderate" under "scanning modes," and click Scan.
- Review the list, in case there's something you want to save; otherwise, click Select All, and then Delete.
- Close Revo, and restart your computer.
I would suggest uninstalling and reinstalling the EA App with Revo as well. I don't have instructions for it, but it should be straightforward.
Reinstall the EA App, and before installing Sims 4, disable your antivirus if you use one. Create a new folder on the root level of the drive of your choice, for example C:\Games is fine, but C:\Program Files\Games is not. When you install Sims 4, select this folder as the destination. You can install only the base game, to save time, if you want.
