worth mentioning too, i have tried to little automatic context menu fixes, which have never worked for me before...
always i do it manually by copy/paste a key in to a new folder in hkey class root...

this is NOT the first time win 10 has given this issue for me when it updates: "
This file does not have a program associated with it for performing this action. ....."

it is NOT my fault that i...

i don't know if you resolved this issue, but for the sake of other people, most of the advice i have found on this issue has NOT been effective.

the ONLY method that worked for me was to manually...