click Open with then click choose another app Please right-click on your photo you can also use other files such as PDF or others.In this example I use a photo and my default photo viewer application will change using the Windows Explorer method (Open With menu) Changing the Default Application Through Windows Explorer (Open With menu).5 Ways To set and change default apps in windows 10 in the following example we will change the mail application that was first set to use Windows default Mail I will change the default application to Microsoft Outlook. Previously, please download and install the application that you will set as the default application on your Windows 10. In the following, we will give you How to set default apps in Windows 10 easily for anyone, including you. When you want to change the default music player application or Windows 10 browser to your favorite application that you just downloaded and installed, can it? Take it easy you can set the application you want, because Windows 10 has a feature to change it. Another example is the Video and music player that is set up using Groove Music. 5 Ways To set and change default apps in windows 10 – When installing Windows 10 for the first time, Windows 10 has set a default application program, for example the browser when Windows 10 was first installed then by default the browser program is set using Microsoft Edge.