Windows 10: Make the Windows Photos app the default app for an unrecognized file type

Hi there! I'm trying to make files that have a specific file extension .mpo open in the Windows Photos app, but I can't figure out how to do it. The Photos app is not listed in Windows's suggested list of default apps, and I can't use the "Look for another app on this PC" option because the Windows Photos app seems to be located in an inaccessible folder "C:\Program Files\WindowsApps". Is there a workaround for this? The files that I'm trying to open all use a file format that's backwards compatible with the JPEG image format, so the Photos app should work with them.

:)

 

How to change default app for file type

'Open With > Choose another app' has three step, in the first it only offers apps registered for that file type. If you click 'More apps' it lists all registered apps regardless of suitability. Both these steps have the tick-box for 'Always use...' in my 18363.752. The third step, if needed, is 'Look for another app on this PC'. The 'Always use...' must be ticked before taking this step if you want the change to stick. However, WMP appears at the second step.

For a quick look at a JPG almost anything (including WMP) is more practical than Photos which on my system takes more than ten seconds just to open a photo. The OP is probably not aware that the Windows Photo Viewer is still available in W10, but hidden away. That's my default viewer for JPG.


Restore Windows Photo Viewer in Windows 10

And, once enabled, is available in Settings > Apps > Default apps.

 

How to set default app for file type jpg

I would like to change the default app for the file type jpg. I've gone through all the steps for setting a default app but the jpg file extension does not appear in the list and therefore I cannot choose a default.

When I Open a jpg file it opens in the Photo app. If I look at the Photo app's settings of default file types, jpg is not there.

Ditto for file type png.

How can I access the default setting for these and other "hidden" types?

 

How to change default app for file type

I'm trying to change app that handles .jpg file types on my system from default "photos" to Windows Media player(just because I like better it looks) and despite fact that WMP is installed and handles other file types -

, I still can't choose it from the windows default app list -

Why is that? What do I need to change?
Windows build is 18363.752