Feature Article: The Permission Barrier
C:\Program Files (x86)\3uTools\3uTools.exe, and add it.If the destination folder is marked as read-only, Windows will block write commands.
C:\Users\[Username]\Documents\3uTools or C:\Program Files (x86)\3uTools.If Error 13 persists system-wide:
sfc /scannow in admin Command Prompt.chkdsk C: /f (requires reboot).Corrupted permissions inside the 3uTools directory can cause error 13.
C:\Program Files (x86)\3uTools%LocalAppData%\3uToolsIf the installation itself is corrupted, permissions are not set correctly. Reinstalling is not enough – you need to purge old settings. 3utools Failed To Access Folder Error Code 13
Step-by-step clean reinstall:
C:\Program Files (x86)\3uToolsC:\Users\YourUsername\AppData\Local\3uTools (hidden folder – type this into File Explorer address bar)C:\Users\YourUsername\AppData\Roaming\3uToolsWindows + R, type %temp%, and delete any 3uTools-related temporary files.C:\Program Files (x86)\3uTools).After reinstallation, run 3uTools as administrator once before doing anything else. Feature Article: The Permission Barrier Option B: Whitelist
In the context of 3uTools and the Windows operating system, Error Code 13 is almost exclusively a Permissions Issue.
When 3uTools attempts to read or write to a specific directory (such as the default iPhone backup location), it acts as a bridge between your iOS device and your PC. Error Code 13 indicates that the Windows file system has denied 3uTools the necessary "read/write" privileges for that specific folder. Turn on Controlled Folder Access
Unlike a "File Not Found" error, which suggests the data is missing, Error Code 13 confirms the folder exists—you simply aren't allowed to touch it.