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Won't bring up pdfs. Safari works OK.


Won't bring up pdfs. Safari works OK.

Additional System Details

This happened

Every time Firefox opened

This started when...

About two updates ago

Installed Plug-ins

  • Shockwave Flash 11.4 r402
  • Displays Java applet content, or a placeholder if Java is not installed.
  • Office Live Update v1.0
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Adobe® Acrobat® Plug-in for Web Browsers, Version 10.1.4
  • The Google Earth Plugin allows you to view 3D imagery and terrain in your web browser.
  • The Flip4Mac WMV Plugin allows you to view Windows Media content using QuickTime.
  • iPhoto6


  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:15.0) Gecko/20100101 Firefox/15.0.1

More Information

One other user posted this problem about 1 year ago. No comments as to how this was solved or any feedback

TheOldFox 110 solutions 619 answers

You should update your Firefox 15.0.1 to the latest Firefox 16.0.1 so that security issues known in prior versions may be avoided

PDF Problem -

Question owner

OK - that doesn't work any other ideas, or do you need to fix the software?

TheOldFox 110 solutions 619 answers

You need to supply more information in your replies to get help. Diagnosing a computer problem at a distance is, at best, a difficult task and is dependent on the user supplying adequate/complete information to make a diagnosis.

What did not work?

  1. the update to Firefox 16.01?
  2. the information about PDF files Firefox with OSX 10.5 and later?

If item 2 above did not work:

  1. is Adobe Reader disabled in your Firefox Plugins?
  2. did you carefully follow steps 1-5
  3. did you read, follow the instructions, try installing and using either PDF Viewer or Schubert|it PDF Browser Plugin?
    • if so, which one?
    • if so, what happened in detail?

Some additional information here - https://support.mozilla.org/en-US/kb/view-pdf-files-firefox-without-downloading-them

Modified by TheOldFox

jblank 1 solutions 4 answers

I'm having a similar issue - pdfs won't load. I'm running firefox 16.0.2 on Mac OS 10.6.8.

BTW, they load on Safari, but they won't save or download.

  • Top 10 Contributor
  • Moderator
10756 solutions 96800 answers

Helpful Reply

Disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead.

  • Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader

PDF files may also be found under another entry like Portable document.

Kapil 0 solutions 3 answers

Helpful Reply

Check this article out, Firefox blocked the Adobe NPAPI plugin from working because it is not supported in the new version of OSX, and causes crashes in 32 and 64-bit...


Kapil 0 solutions 3 answers

The work around is to go to your preferences and change what Firefox does when you click on that file type from using the NPAPI plug-in to instead using the default Adobe Acrobat Plugin -- it actually still opens the PDF in your browser without opening a separate Adobe window -- looks great.


(scroll down to step 4)