"Device is unreachable" Error message when trying to import media from iPhone to Windows 10 PC
Solution 1:
I was able to fix this problem by simply changing a setting on my iPhone. If you have the same problem, go to Settings/Photos and scroll down to "Transfer to Mac or PC." "Keep Originals" should be checked, not "Automatic." Simply changing this setting solved my problem.
(Thanks to Micatek for the solution Ref: https://discussions.apple.com/thread/8351572)