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How to undo "remember my choice" when opening a downloaded document in firefox (windows 8).

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I need to open a pdf in the firefox broswer, but since I clicked "open in TWINUI", and remember my choice, it doesn't let me open in the broswer anymore. How do I change that preference?

I need to open a pdf in the firefox broswer, but since I clicked "open in TWINUI", and remember my choice, it doesn't let me open in the broswer anymore. How do I change that preference?

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You can change file actions in Tools > Options > Applications

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Current Firefox versions have enabled a built-in PDF Viewer that doesn't have all features that other PDF readers like the Adobe Reader have or may not function properly otherwise.

You can change the action for Portable Document Format (PDF) from Preview in Firefox to use the Adobe Reader or set to Always Ask in "Firefox > Options/Preferences > Applications".

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

You can check the value of the plugin.disable_full_page_plugin_for_types pref on the about:config page and remove the application/pdf part if present or reset the pref to the default via the right-click context menu.

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