Sims 4 Unable To Start There Was An Error Processing The Startup Configuration Script Exclusive | TESTED • Release |

How to Fix The Sims 4 "Unable to Start: Error Processing Startup Configuration Script"

  1. Press Win + R, type regedit, press Enter.
  2. Navigate to: HKEY_CURRENT_USER\Software\EA Games\The Sims 4
  3. Look for any key named Mutex or Startup_Lock. Delete them if found.
  4. Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\EA Games\The Sims 4
  5. Delete the same keys if present.
  6. Close regedit and restart your PC completely (not Sleep mode).

Solution 6: Windows User Account Control & Permissions (The "Exclusive" Ownership Fix)

Sometimes Windows itself denies Sims 4 exclusive access to its own configuration script because the folder ownership is scrambled (common after a Windows Update or moving your Documents folder to OneDrive). How to Fix The Sims 4 "Unable to

✅ Fix 2: Run EA App & Sims 4 as Administrator

  • Right-click EA App shortcut → Properties → Compatibility → Check “Run this program as an administrator” → Apply.
  • Do the same for TS4_x64.exe (in Program Files\EA Games\The Sims 4\Game\Bin).

Steam: Right-click The Sims 4 in your Library > Properties > Installed Files > Verify integrity of game files. Press Win + R , type regedit , press Enter

If clearing the overrides doesn't work, some core game files might be damaged or missing. Go to your , click the three dots (Manage) on The Sims 4 , and select Right-click The Sims 4 in your library, select Properties > Installed Files , and click Verify integrity of game files 3. Reset Your User Folder (The "Clean Folder" Method) Solution 6: Windows User Account Control & Permissions

"Unable to start: There was an error processing the startup configuration script [6d1778b8:1df4e8dc:00000000:912c9c10]"