Always use an MFi-certified or original Apple Lightning/USB-C cable. Summary Checklist Potential Cause Insufficient Privileges Run 3uTools as Administrator Driver Corruption Use "Repair Driver" in 3uTools Toolbox Privacy Settings Reset "Location & Privacy" on iPhone Antivirus Block Add 3uTools to the exclusion list
If you know which folder 3uTools is trying to access (e.g., backup or download folder): 3utools Failed To Access Folder Error Code 13
. He jumped into the Windows Security settings and temporarily toggled off the "Real-time protection." Sometimes, the firewall mistook a data transfer for a digital break-in. Finally, he swapped the frayed lightning cable for a brand-new MFi-certified one 3utools Failed To Access Folder Error Code 13