Good morning Greg,
We have several family PCs here at home in Switzerland, all running Windows 10 and the embedded Photos app "Import/From a USB device" no longer works correctly with any of our iPhones. The German version Fotos hangs up at the start while looking for photographs to import. The English version Photos doesn't crash immediately but I've noticed some differences that indicate this is an updated app. The "Import settings" function no longer includes the possibility to delete all photographs on the iPhone. The app defaults to "Import items/None". It is possible to select "Import items/All items" and this works. However, selecting "Import items/Items since last import" results in the app crashing and exiting without an error message. I hope this helps you reproduce the problem and Microsoft can fix it as soon as possible.
Best Regards
Perry