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If you recently changed where backups are stored, 3uTools may lose access. Open 3uTools and go to Settings .
3uTools relies heavily on Apple Mobile Device Support and iTunes drivers to communicate with the iPhone. If these drivers are outdated or corrupted, file access errors can occur.
using the Device Manager.
If you have tried all the above and still see Error Code 13, the 3uTools installation itself may be corrupted. Uninstall 3uTools via Control Panel. Restart your computer to clear cached temporary files.
If none of the above work, your installation is corrupt at the ACL (Access Control List) level. 3utools failed to access folder error code 13 new
. This grants the software necessary permissions to access restricted system folders. Update 3uTools and iTunes : Ensure you are using the latest version of by clicking Check Update
Go to the menu and look for Download Directory or Backup Directory . Click Change .
The is a critical system interruption that typically occurs when the 3uTools software cannot write, read, or verify data packages within your computer's local directories. This error standardly halts major tasks such as iOS flashing, data backups, custom jailbreaks, or firmware validation .
Driver conflicts with official Apple connectivity protocols regularly cause file directory access errors. Disconnect your iOS device from the computer. If you recently changed where backups are stored,
A: Yes. 3uTools is a trusted tool (though controversial in the Apple community). Granting full control to its own folder does not expose your system to risk, provided you downloaded it from the official source.
A loose driver connection can cause 3uTools to lose track of file directories during an active flash or data migration process.
The "failed to access folder error code 13" in 3uTools is typically a issue where the software cannot read or write to its own installation or temporary directories . 1. Run as Administrator
If you'd like, I can provide a more in-depth guide on using the modes, or help you troubleshoot other common error codes (like 9, 14, or 4013). Which would be most useful to you? If these drivers are outdated or corrupted, file
Also repeat this for the 3uTools folder inside C:\Users\[YourName]\AppData\Local\ (You must enable "Hidden items" in File Explorer to see AppData).
If iTunes is open in the background, it may be competing for access to the device or backup folders.
What are you running? (Windows 10 or Windows 11) Are you using any third-party antivirus software ?
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