I can't open a PDF file in FireFox.

I deleted and downloaded the Adobe viewer once again and have tried to solve this problem through the support site, but do not have a button "Firefox" I can find.

Help!

Thank you.

You can set the pref pdfjs.disabled true on the topic: config page to disable the build-in the PDF Viewer.

You can check the value of pref plugin.disable_full_page_plugin_for_types on the topic: config page and delete the application/pdf if it is present or reset the pref via the context menu by default if you want to display PDF documents in Firefox with another application (i.e. not integrated PDF Viewer).

Tags: Firefox

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