Create a new profile by running Firefox with the -P command line argument, choose the 'Manage Profiles' button and then choose 'Create Profile.'.

If you encounter strange problems relating to bookmarks, downloads, window placement, toolbars, history, or other settings, it is recommended that you try creating a new profile and attempting to reproduce the problem before filing bugs.

If you do not do this you may end up with a jammed entry in the Extensions list and will be unable to install the extension globally. you installed it from a Web page) and then wish to install it for all user profiles using the -install-global-extension command line flag, you must restart the browser once to cleanse the profile extensions datasource of traces of that extension before installing with the switch.

If you uninstall an extension that is installed with your user profile (i.e.

Disable the Extension/Theme that is causing trouble and then start normally. firefox-bin -safe-mode When started in Safe Mode all extensions are disabled and the Default theme is used. The award-winning Web browser is now faster and becoming more secure.

Firefox includes pop-up blocking, tab-browsing, integrated Google, Yahoo and Bing search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.

Download the latest versions of the best Mac apps at safe and trusted MacUpdate Download, install, or update Firefox for Mac from MacUpdate. Firefox 62.0.3 - Fast, safe Web browser.Firefox includes pop-up blocking, tab-browsing, integrated Google, Yahoo and Bing search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.

Mozilla Firefox is a fast, full-featured Free Web Browser.

Firefox 3.6.28