How to set Adobe Reader as the default PDF viewer in Windows 10 Created: February 15, 2016 / Author: Amelia The following article will show you how to change the default PDF viewer in Windows 10 to Adobe Reader. Make Acrobat or Reader the default owner of PDF files on Windows 10 If you don’t have Adobe Reader you can download it here. Tagged:Adobe ReaderDefault PDF ReaderPDFWindows 10