If you want to know, how to include photo viewer in Windows 10, thereby abandoning imposed by your application "Photos", then continue reading this article, because in it, you will find all the answers to your questions.
The peculiarity of such a large discontent "dozens" of users to ensure that they are offered to start using the new application to replace the old, it is understandable, because the habitual application much easier, which is why, day by day, more and more PC users think about the fact, that as soon as possible refuse the new application "Photos" and start using the old, time-tested application "viewer pictures."
To start, you need to start the Registry Editor using the command «regedit.exe» and move it here on this path: HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows Photo Viewer \ Capabilities \ FileAssociations 
Provided that the contact section is not desired (it is the last one), then you must create it!
The next step is the creation of a string parameter having a «.jpg» name and value «PhotoViewer.FileAssoc.Tiff». This step will allow you to link the "Windows Photo Viewer" with the JPG-files. This kind of procedure should be carried out for those files that you think should be opened using the "photo viewer". 
Now, you need to make Viewer pictures in Windows 10 basic application that allows you to view photos and images. In order to make the above-mentioned "appointment", you must do the following log actions: select the item "Windows Photo Viewer" in the list, which is available in the "Options" list → go to "System" → go to the "default application" → open click "View photos or directly from Explorer context menu" "Open with" → click on "Select a different application" → go to the "View photos Windows» and just put a check in the "Always use this application to open a .jpg file".
Your work, and will allow you to include the Viewer in Windows 10 pictures for all files that have a «.jpg» expansion and now they will be opened only after the application is your opinion of them should open.
