Okay, so a new computer.
Let's try the following steps:
- Open the Task Manager and select "More Details."
- Select the "Details" tab at the top.
- Select the "Name" tab to sort by Alphabetical order.
- See if you can find an instance of TS4.exe, or TS4_x64.exe (If so, right-click on it, and select "End Task." Attempt to re-run Sims 4 thereafter.)
(If this resolves it, let me know.)
If you don't find either task, close the Task Manager, and move onto the steps below:
- Close Origin completely. (Click the arrow on the bottom-right of your taskbar, right-click the Origin logo, select "Quit Origin."
- Re-Open Origin as an Administrative User in Windows. (Easiest way is to select the Windows icon on the lower left, type "Origin" to bring up the Origin logo, right-click the logo, then select "Run as Administrator.")
- If you get a notification message asking to authorize making changes, hit OK.
- If you need to sign back into Origin, do so. (If your computer is already trusted, it should just log you in.)
- Go to "My Game Library."
- Find The Sims 4 in your Game Library, right-click it, then select "Update Game."
- Once it finishes updating and confirms the game is up-to-date, open the game.
If the game is still giving you the same error, let me know. If it works too, let me know as well.
- B