Are you sick of opening PDF's in edge? 

Let's see how we can make Adobe Reader as our default PDF Viewer. 


1. Right-Click on any PDF File and select Properties. 

2. Click on "Change" in front of Open With Option.

3. Choose Adobe Reader DC from the list and Press "OK"

4. Click Apply and Ok to finish.

Still not Fixed?

Option. 2

1. Go to Start Menu and type "Default" and press the "Default App" option.

2. Click on "Choose default apps by File Type"

3. Choose "Adobe Reader' for .pdf type.

Hope it helps you out and resolves your issue.