Sims 4 Unable To Start There Was An Error Processing The Startup Configuration Script Exclusive !new! Jun 2026

This error sometimes stems from a stale Windows Mutex (a mutual exclusion object) that wasn't released on a crash.

Some antivirus software (especially McAfee, Norton, or Avast) can lock .ini or .cfg files "exclusively" for scanning. This error sometimes stems from a stale Windows

For a moment, there was nothing. Just the distant, rhythmic sound of a hard drive spinning. Just the distant, rhythmic sound of a hard drive spinning

Temporarily turn off Windows Defender or third-party antivirus to check for blocks. 📂 Troubleshooting User Data : Ensure the game and the EA App

: Open the EA App , go to your library, click the three dots on the Sims 4 icon, and select Repair .

: Ensure the game and the EA App are installed on the same drive to avoid permission and pathing conflicts. Common Triggers

Follow these troubleshooting steps to get your game back up and running. 1. Clear the ConfigOverride Folder (Common Fix)