Ok, think I have the basic process down. Will roll back one more time to 8.1 and document the upgrade process. Are you looking to have the HEY CORTANA option as well?
I am pretty sure you don't want to use the one from the Windows Store. The one that I used is
InteropTools 2.0.79.0_x86_x64_arm along with the dependencies. It might be easier to e-mail the files to you along with instructions. I really don't use this site this much and not entirely sure how else to get you the files that I used... You can reach me at malacarr@gmail.com. Let me know what you want to do, just got done upgrading from the 15063.297 to 15063.1631