Locate and delete these three specific files: GraphicsCards.sgr , GraphicsRules.sgr , and TS4CommonRules.sgr .
Sometimes, Windows User Account Control prevents the game from executing startup scripts because it lacks the proper read/write permissions for the Documents folder.
Open Steam > Go to Library > Right-click The Sims 4 > Select Properties > Go to the Installed Files tab > Click Verify integrity of game files .
Script mods that alter how the game starts up can cause this, particularly after a patch.
This error often appears when the game's engine fails to read or interpret critical configuration files, frequently caused by modified system files, corrupted game data, or issues with user permissions. This article provides a comprehensive guide to understanding and fixing this issue in 2026. What Causes the "Startup Configuration Script" Error?
OneDrive often locks or syncs the Documents\Electronic Arts\The Sims 4 folder, causing "exclusive access" errors.
Sometimes, the "startup configuration script" error arises because the game cannot communicate correctly with your graphics card, particularly after a Windows update or when using outdated drivers.
Sometimes the issue isn't the game, but the app trying to launch it. Open the EA App. Click the three lines in the top-left corner. Go to . 5. Refresh the Sims 4 Folder (Reset Game)
By following these steps, you should be able to bypass the "error processing the startup configuration script" and get back to managing your Sims.
Open your antivirus software (or Windows Security). Add TS4_x64.exe and the EA App to your allowed apps list.
Go to > Manage Ransomware Protection .