How do I reset my Firefox browser on Macintosh?

If your web browser often crashes, stops working the way it used to, or you experience any problem viewing or navigating a website, you may need to reset your browser to its default state.


  • Open the Firefox browser.

  • On the address field, type in about:support and hit Enter.

  • Click Reset Firefox button.

  • A window will appear showing the details of this action.

  • Click Reset Firefox button.

Your browser settings will be restored to their original defaults. This may reset your homepage, disable your extensions, and unpin all tabs. It will also clear other temporary and cached data, such as cookies, content and site data.

  • Click Done.

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