Can’t Open PDFs in Fire Fox Browser

mozilla small  Sometimes updates change things.

A previous FireFox update changed the default preview for PDFs from “Open”to “Download”.

I spent an hour trying to fix it. Here’s what worked for me.

Go to Firefox > Options > Applications > Portable Document Format (PDF)

And for Portable Document Format (PDF) set the status as “Use Adobe Acrobat (in Firefox)”

You can find some other options here.