Ok Paul, read this thread and use the link in the 4th post;
https://social.technet.microsoft.com...-in-photos-app
You need to install the Photos Media Engine add-on from the Microsoft Store - it's free.
I recently re-set my PC and, when first using the photos app, it installed that add-on when I first tried to use the photo auto enhancer. I maybe should have mentioned that but was assuming it would already be installed, yours being a new system. Sorry about that
That
should resolve your problem.