HEIC/HEVC support in Windows 10
(While it is ridiculous that you need to do this,) to add HEIC/HEVC support to Windows 10 Photos app, either:
Open a browser and paste:
ms-windows-store://pdp/?ProductId=9n4wgh0z6vhq
Open a cmd window and paste:
start ms-windows-store://pdp/?ProductId=9n4wgh0z6vhq
Then click install.