Photos App Mac Not Working. The photos app in windows 10 has a nice interface and decent image filtering options right off the bat. 1 person stating that an app is not working could be an user error,

If you have a mac desktop, here is how you go about resetting your smc. I opened settings app and checked what apps for photo viewer are installed on my pc. No matter the problem you are encountering is windows 10 photos app not showing photos or windows 10 photos app won’t open, you can follow the fixes provided below to have a try.
If you prefer, you can store photos and videos outside the photos library—for example, in a folder on your mac or on an external hard drive—and still view them in photos.
Fill your library, not your device. View your photos and videos, documents, iwork files, and even your desktop and documents folder on your mac. If you don’t see the import screen, click on your iphone or camera in the photos sidebar under devices. I've had this problem for a while, but my photos for mac app is not recognising pictures on my iphone.