All of a sudden I can't open PDF files on emails and documents

Using Firefox and BT Yahoo email on a PC with Vista. This week I was not able to open all documents including the files PDF come to me on email. This has never been a problem before. I tried to empty history as in a previous question, but that did not work.

The current versions of Firefox have allowed a built-in PDF Viewer that has all of the features that other PDF as Adobe Reader readers have or can not work properly otherwise.

You can change the action for Portable Document Format (PDF) to Preview in Firefox to use another application like Adobe Reader or define always ask in "Firefox > Options/Preferences > Applications.

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).

See also:

Tags: Firefox

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