Error Copying File or Folder: A device attached to the system is not functioning / The device is unreachable / The requested value cannot be determined, when copying photos from iPhone to Windows 10

An iPhone SE with iOS 12.3.1 has around 6800+ photos, total size 55GB. 13.000+ files, as Live Photos consist of two files: JPG and MOV.

On macOS Mojave 10.14.5 all 13000+ files can be transferred to a folder in a single batch using Image Capture utility (https://support.apple.com/en-in/guide/image-capture/imgcp1003/mac).

Also, all 6800+ photos can be Imported in a single operation in built-in Photos app (https://support.apple.com/en-us/HT201302#importmac).

Which indicates that both iPhone and Lightning cable work fine.

On Windows 10 x64 v.1903 (May 2019) when the iPhone is plugged in with the same Apple Lightning cable to USB 2.0 or USB 3.0 port, it immediately appears as an empty folder This PC/[iPhone name] in Windows Explorer.

After 1 min 20 sec an “Internal Storage” folder appears in This PC/[iPhone name] that contains DCIM folder with several 1xxAPPLE subfolders with photos.

Copying photos from iPhone to Hard Disk always ends abruptly, with unpredictable number of files copied, from 0 to 12 to 40+ to 400+ to 900+, with one of the following three “Error Copying File or Folder” messages, shown on screenshots:

• A device attached to the system is not functioning.

• The device is unreachable.

• The requested value cannot be determined.

After the error, no single file can be copied (“The device is unreachable”) until the iPhone is unplugged, re-plugged.

Probably this is caused by some bug (memory leak) in Apple driver signed/released 4 years ago within a few days of Windows 10 original RTM (https://www.theverge.com/2015/7/15/8950481/microsoft-windows-10-rtm-date), as the problem seems to persist since then ("In case it's a folder with many

files the error may occur again. If this happens, I always transfer my files in batches of a certain number" - https://discussions.apple.com/thread/7805883).

Or maybe there is a bug in Windows 10 that gets exposed by the Apple driver. Other USB-connected smartphones seem to suffer from similar issue too: https://help.republicwireless.com/hc/en-us/articles/360003927354--Error-Copying-File-or-Folder-when-transferring-files-to-computer-with-USB.

When regularly moving photos from an iPhone to PC, up to 100-200 in a single operation, the problem also occurs, but fairly infrequently.

Choosing “Keep Originals” does not help in this case (https://discussions.apple.com/thread/8351572).

Windows itself can copy all these photos from local HDD to USB HDD for backup, so USB stack works fine with huge workloads, aside from copying thousands of photos from iPhone.

Apple driver info (iTunes 12.9.5.7):

Device Manager:

USB Controllers/Apple Mobile Device USB Driver

Version: 6.0.9999.69
Date: 5/19/2017

Driver File Details (2 files):

C:\Windows\System32\usbaaplrc.dll

Product name: Apple Mobile Device USB Driver Resource DLL
Version 1.67.0.0
Size: 6,112,072 bytes
Signed by Apple Inc. on 06/11/2015

C:\Windows\System32\drivers\usbaapl64.sys

Original filename: usbaapl.sys
Product name: Apple Mobile Device USB Driver
Version 1.67.0.0
Size: 64 784 bytes
Date modified: 03/28/2016

Can anybody reliably copy huge number of photos (up to 6000+files, 50GB) from iPhone to PC in a single operation in Windows Explorer without facing this problem?

Is there a workaround that would resolve this problem on Windows 10 x64 ver. 1903?

Thank you.