Because computers don't fix themselves

Posts Tagged ‘firefox’

Fillable forms in Adobe Reader / Firefox


Pre-filled and fillable forms don’t work properly in Firefox.


Apparently, Firefox added a built-in PDF viewer to their browser with release 19. Most people don’t notice the difference, as long as the pdf displays properly when you try to view it in the browser. However, if you are using a system that is supposed to pre-fill the form with data from the server, or you wish to make changes to fillable forms on the pdf document, those features are disabled in their default built-in viewer.


You can manually force Firefox to NOT use its built-in viewer, and go back to using Adobe’s PDF Viewer plug-in.

Step 1: Turn off the built-in viewer.

  • Type about:config in the address bar of Firefox, and hit enter.
  • Say yes to understanding that you can break Firefox.
  • Search for pdfjs.
  • Double click on pdfjs.disabled to change it from False to True.
  • Step 2: Re-enable Adobe in Firefox

  • In Firefox, go to Tools / Options
  • Click on the Applications Tab
  • Change all instances of Adobe Acrobat document to “Use Adobe Acrobat in Firefox”
  • Instances can be labelled:
  • Adobe Acrobat Forms Document
    Adobe Acrobat XML Data Package File
    Portable Document File

  • Click ok.
  • Adobe Flash Player in Firefox 6

    I just upgraded to Firefox 6 recently, and ever since doing so, I kept getting the stupid error message about adobe flash player not being able to load content. This message:

    Adobe Flash Player has Stopped a Potentially Unsafe Operation

    The following local application on your computer or network : [object] is trying to communicate with this Internet-enabled location, blah blah blah

    Anyway, clearly it was Adobe flash player not reading ads on pages properly. I wouldn’t mind that so much, except that it also crashed the webpage and forced me to restart my browser every time.

    After several unsuccessful tries at updating my Adobe Flash player, I realized that the usual Adobe Flash updater for Firefox was freezing and not completing the install. I’m not sure why this was happening. Probably one more issue of having a 64 bit version of Windows which programmers are STILL trying to figure out.

    The solution for me was to download the .msi installer for the flash updater rather than using their usual downloadable .exe version. I had to root around to find it, but here it is:

    Windows / Plug-in based browsers / Download MSI installer. AFter running that, voila. Adobe flash finally updated, and so far, no more crashing. Good luck!

    P.S. – The error message came up one more time after installation succeeded. But, because it wasn’t crashed this time, all I had to do was click on “settings” and make sure that I allowed all websites to store information on my computer was checked. Which, by the way, is fine. Websites always store information on your computer in order to make them load faster or remember your user name. It’s not a security problem to allow that.