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How to make Firefox the default program for viewing pdf files?

  • 4 replies
  • 1 has this problem
  • 9 views
  • Last reply by cor-el

ohegge
ohegge
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I have been trying to google the problem, and entering the troubleshooting options. Firefox 46.0 Win 8.1

TWINUI seems to be the default program for viewing pdf. And I am unable to change this into previewing the pdf files in a browser vindow instead.

I have been trying to google the problem, and entering the troubleshooting options. Firefox 46.0 Win 8.1 TWINUI seems to be the default program for viewing pdf. And I am unable to change this into previewing the pdf files in a browser vindow instead.

All Replies (4)

FredMcD
FredMcD
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Open your file browser and find a pdf file. Right click and select Properties. On the General tab, press the Open With Change button.

ohegge
ohegge Question owner
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Thanks for a very quick reply. But the problem was not solved. Changing the default app to open pdf files, only lead to the a blank browser window, abd a box asking for what to open the pdf file with. Where "preview in Firefox", does not appear as en option....

Oxylatium
Oxylatium
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about:preferences#applications Portable Document Format (PDF) Preview in Firefox http://i.imgur.com/1CBKT6p.jpg

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Try to rename/remove the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can use this button to go to the current Firefox profile folder: