Ever since the windows update in early October (I think) the Microsoft Photos App and the windows photo import have been SEVERELY broken. It does not matter if it is Android or iPhone because the problem is not with our usb devices but with the windows program itself. Something is very wrong and needs to be addressed.
None of the troubleshooting steps the user can take will fix something that is inherently broken in the program itself. I have resorted in some instances where I need the photo on my pc that I will email it to myself and then download.
Current known issues:
Photos app freezes when scanning for new photos
If you can get an import started and the device goes to sleep, the import fails completely giving an error message that the file is corrupted
Using file explorer to locate your device and right click will often find the photos but may or may not import
In both methods of beginning an import, once the import gets to a video it will often "hang" for several minutes and it is about 1 in 4 attempts that the video will import. 75% of the time it says the file is corrupted and it will then skip ALL the remaining import files.
Our best bet at this point is to look for a reputable import software and bypass the windows Photo app completely until it is repaired.