New
#41
I didn't have this issue until I applied a Windows 10 update a couple of weeks ago.
I went through the Control Panel>Default Programs route to give Adobe Acrobat Reader DC all its defaults, but still found Edge was being used to open PDFs.
I've now tried a different tack. I opened Adobe Acrobat Reader DC and went to Edit>Preferences>General, then click the box to "Select As Default PDF Handler". Encouragingly, this opened a UAC dialogue box for me to confirm the change, which implies something has actually happened this time. Since then, PDFs have opened in Adobe Reader DC. However, I may not know if this is a permanent fix until my next reboot...