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

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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....

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looking for quick reply from firefox support team.

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You should be able to switch back to Adobe using the steps in this article: View and edit 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.