This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Default PDF Viewer won't change to Mozilla

  • 6 fhreagra
  • 1 leis an bhfadhb seo
  • 8 views
  • Freagra is déanaí ó McCoy

more options

So I'm trying to change my default PDF viewer to Mozilla, but it won't change from Edge to Mozilla. I have set these settings "Preview in Mozilla". Also, if I try to change my default PDF viewer in Windows, it won't even let me change to Mozilla, it just pop backs to Microsoft Edge. However, if I try to set my default PDF viewer to Adobe or anything other than that, that totally works fine.

So I'm trying to change my default PDF viewer to Mozilla, but it won't change from Edge to Mozilla. I have set these settings "Preview in Mozilla". Also, if I try to change my default PDF viewer in Windows, it won't even let me change to Mozilla, it just pop backs to Microsoft Edge. However, if I try to set my default PDF viewer to Adobe or anything other than that, that totally works fine.

All Replies (6)

more options

Hello Marc-Dirven,

Would you check this please :

3-bar menu (or Tools) => Options => General Under "Applications" => Content Type, scroll down to Portable Document Format (PDF) - under "Action" did you choose "Preview in Firefox"  ?

Next, would you please take a look at this article :

https://techdows.com/2015/08/how-to-change-the-default-pdf-viewer-in-windows-10.html

more options

McCoy said

Hello Marc-Dirven, Would you check this please : 3-bar menu (or Tools) => Options => General Under "Applications" => Content Type, scroll down to Portable Document Format (PDF) - under "Action" did you choose "Preview in Firefox"  ? Hi, it is set to "Preview in Firefox", and when I try to change it in Windows 10 as the link suggested, it pop backs to Edge. Also, if I change it to for e.g. Adobe, it doesn't pop back to Edge, so I'm thinking this has to do with Firefox. Next, would you please take a look at this article : https://techdows.com/2015/08/how-to-change-the-default-pdf-viewer-in-windows-10.html
more options

The "Preview in Firefox" thing didn't work and was already set this way. Also when I try to change it to Firefox in Windows 10, it pops back to Edge. But if I change it to for e.g. Adobe, it doesn't pop back to Edge, so I'm thinking this has to do something with Firefox.

more options

If changing the PDF viewer in Windows (as described in the techdows article) doesn't work, then maybe you'd like to post your question on the offcial Microsoft support forum :

https://support.microsoft.com/nl-nl

(As you appear to be Dutch, I've chosen the Dutch branch)

more options

A new error occured. When I left click the file and select open with Firefox (this worked fine previously) an infinite number of Firefox internet tabs opens, all loading the PDF.

more options

Marc-Dirven said

A new error occured. When I left click the file and select open with Firefox (this worked fine previously) an infinite number of Firefox internet tabs opens, all loading the PDF.

Sounds like the same problem in this thread :

https://support.mozilla.org/en-US/questions/1194929