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Firefox Open PDF with PDF Plugin

FireFox 1.5Suddenly, after upgrading to FireFox, the PDF file can be directly view within the browser anymore. Yes, I do have the PDF Download extension installed. I was trying very hard to solve it. I did find the solution. Here we go, (Note: this assumes you have the PDF Download extesion, but, it should work even without it), two options:

  • Make sure your PDF plugin file is the latest one comes along with your Adobe Acrobat Reader installation.
    1. Close your FireFox completely.
    2. Copy the Acrobat Reader plugin dll file to your FireFox plugin directory. For example, in Windows XP with Acrobat Reader 7.0.8, copy “C:\Program Files\Adobe\Acrobat 7.0\Reader\Browser\nppdf32.dll” to “C:\Program Files\Mozilla Firefox\plugins\”. If you cannot find nppdf32.dll file at all, you need to try next option first followed by this option again.
    3. Open FireFox and give it a try. If still not working, try next options.
  • Reconfigure your Acrobat Reader (e.g. 7.0.8)
    1. Close your FireFox completely.
    2. Open Acrobat Reader.
    3. Go to “Edit”, “Preferences”.
    4. Click “Internet” in the left side “Categories”.
    5. Tick “Display PDF in browser”
    6. Close the Acrobat Reader. This may bring up some Acrobat Reader installation window to reconfigure its stuff.
    7. Open FireFox and give it a try. It should work

My observation for the second option is, toggle the option “Display PDF in browser” will cause the nppdf32.dll be recreated (if ticked) or removed (if un-ticked).

Good luck!

Categories: Tech
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