To change the default PDF reader in Windows 10, open the Start Menu, go to "Settings," then "Apps," and "Default Apps." Select "choose default apps by file type," scroll to .PDF, and choose your preferred PDF reader.
- For Windows 10, click on the Windows Start Menu on the bottom left corner, then click “Settings”.
- Next click “Apps” and “Default Apps”.
- Click “choose default apps by file type”. This may take a moment to populate. Scroll down to .PDF. Across from .PDF, you will have a list of programs.
- Choose a PDF reader of your choice.