I have the same problem. Hope it will be fixed soon.
I got an answer from the Nokia support team which fix the problem. Here the translation of the email from German to English: 1. Open the confi menue and push the Build number several times untill you get the info "you are already developer". 2. Then choose the developer option and select USB configuration. Probably MTP is already selected. Select now charging and than MTP again. Connect the phone via USB to your W10 Computer and it will work.
I have the same problem since Android 8.0 update. The workaround works, but has to be done everytime before the phone is connected to the computer.
PLEASE FIX THIS