@Sandra111390 Your dxdiag shows one error related to the Nvidia graphics driver, a couple of Sims 4 errors that might also be related to the driver, and a few failed Windows updates. It's best to start with the last of these, specifically by running some basic checks on your Windows system files:
- Hit Windows key-X
- Choose either “PowerShell (Administrator)” or “Windows Terminal (Administrator),” whichever option is offered
- Inside the window that appears, copy and paste “DISM.exe /Online /Cleanup-image /Restorehealth” without quotes, and enter
- The system will start validating soon. If it throws an error, please list it here
- After it reaches 100%, hit Windows key-X again
- Again, choose “PowerShell (Administrator)” or “Windows Terminal (Administrator)”
- Inside the window, copy and paste “sfc /scannow” without quotes, and enter
- Post the message you receive here
Restart your computer, hit Windows key-i, select Update & Security, and click the box to check for updates. If any install, restart again afterwards.
Next, do a clean uninstall of the Nvidia graphics driver, as described here:
https://crinrict.com/blog/2019/02/clean-re-install-of-graphics-drivers-with-display-driver-uninstaller-ddu.html
You can get a fresh copy of the Nvidia driver here:
https://www.nvidia.com/Download/driverResults.aspx/210518/en-us/
However, the error itself is showing up for a few other players for no apparent reason, and I'm not confident the above will allow Sims 4 to run for you even if it should be done for overall system health. If you still get the connection error, please post in this thread:
https://answers.ea.com/t5/Technical-Issues-PC/Failed-to-Launch-Game-due-to-Connection/td-p/12737059
Create an EA App error report, as described here:
https://help.ea.com/en/help/ea/ea-app/run-ea-error-report/
And include the report ID in your post.