Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

I Install pdf.js.xpi update it wont fix my problem and it disable my adode reader

more options

i have problem in viewing some pdf files my firefox browser using build in pdf viewer ,but it can open in abode pdf plugin. firefox support suggest to install the update pdf.jd.pxi .. i installed it. my problem still present and it deactivate my adobe plugin also. now i cant use both the viewers. how to fix this....

i have problem in viewing some pdf files my firefox browser using build in pdf viewer ,but it can open in abode pdf plugin. firefox support suggest to install the update pdf.jd.pxi .. i installed it. my problem still present and it deactivate my adobe plugin also. now i cant use both the viewers. how to fix this....

All Replies (2)

more options

looking for quick reply from firefox support team.

more options

You should be able to switch back to Adobe using the steps in this article: View PDF files using Firefox’s built-in viewer.

You might also need to disable the extension on the Add-ons page. Either:

  • Ctrl+Shift+a
  • "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Extensions. Then you can find and Disable it on the right side.