3utools Failed To Access Folder: Error Code 13

3uTools Failed to Access Folder Error Code 13 typically indicates a permission or file path restriction

  • Pause real-time protection and retry (re-enable afterward).
  • Right-click executable → Properties → Compatibility → try Windows 7 compatibility + Run as admin.
  1. Navigate to the folder (common paths:
    C:\Users\<YourName>\AppData\Roaming\3uTools
    C:\ProgramData\3uTools
    C:\3uToolsBackup).
  2. Right-click folder → Properties → Security tab.
  3. Select your username → click Edit → Full control → Apply.
  4. Also grant Everyone or Users group Full control temporarily for testing.

✅ Fix 4: Temporarily Disable Antivirus / Windows Defender

  • Disable real-time protection temporarily and check if the error goes away.
  • If yes, add 3uTools.exe and its installation folder to the exclusions list of your antivirus.

Why might Windows firewall cause 3uTools to fail to access folders? 3utools Failed To Access Folder Error Code 13

Fix 4: Verify and Repair 3uTools Installation

If the installation itself is corrupted, permissions are not set correctly. Reinstalling is not enough – you need to purge old settings. Pause real-time protection and retry (re-enable afterward)

6. Prevention Tips

  • Always run 3uTools as Administrator.
  • Store backups on an external drive or non-system partition.
  • Keep 3uTools updated (check official site for patches).
  • Exclude 3uTools folders from automatic antivirus scans.

Pro Tip: To avoid doing this every time: 3utools Failed To Access Folder Error Code 13