How do I change my default PDF viewer?

Changing the default pdf viewer (to Adobe Reader)
  1. Click on the Start button and select the Settings cog.
  2. In the Windows Settings display, select Apps.
  3. The Set Default Programs window will open.
  4. Under the list of programs on the left, click on Adobe Acrobat Reader DC.
  5. Choose Set this program as default.
  6. Select OK.