How to start Firefox if you see an error message, "Firefox is already running, but is not responding" or, on Mac OS X, "A copy of Firefox is already open".
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This article explains what to do if the Firefox window doesn't open or you get an error message when you try to start Firefox.
This page explains how to install Firefox on Chromebooks and other devices running ChromeOS.
How to fix the error ''Your Firefox profile cannot be loaded. It may be missing or inaccessible'' so that you can start and run Firefox.
Policy support for Firefox is implemented using Group Policy.
Find solutions to Firefox issues like crashing, not starting, slowness and websites not loading.
How to run customizations on Mac.
The lobby allows you to preview the room and any users who might already be in the room. Learn more.
How to configure your add-on to run on Firefox for Enterprise without having to sign it.
The article covers the steps you can take to make Firefox run faster.