This guide is used for changing the default apps that open with file extensions for Windows 10.

1. Open Settings

Windows 10 Creators Update Settings 15019

2. Go to Apps -> Default Apps in Windows 10

Settings Apps Default Apps

3. At the bottom of the screen, go to 'Choose default apps by file type'

Settings Apps Default Apps By File Type Link

4. Scroll down until you find the file extension(s) you would like to change and click on the program next to the extension to change it.

Edge Disable PDF Viewer

Edge Disable PDF Reader

5. You have successfully changed the file association!