However, in Windows 10, this is not the case. What actually happens is that when you try to open a photo, it asks you to choose an option from the Photos metro app, Paint, or GIMP. In this guide, I will walk you through the steps to set Photo Viewer as your default.
Using the Command Prompt.
You will now have the option to specify the Photo Viewer as the default program for opening or viewing pictures.
Using Registry Editor
If the command prompt method doesn’t work, you can also try using the Registry Editor to see if it solves the problem. Download the registry file from here and save it to an accessible location. Right-click on it and select Run as Administrator. After the registry file has been run, restart your computer and check if the editor has changed.
