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Featured Articles

Secure connection failed and Firefox did not connect

Secure connection failed and Firefox did not connect

If a website requires a secure connection that cannot be established, Firefox will not connect to protect you and will show you an error page. Learn more.

Update Firefox to the latest release

Update Firefox to the latest release

Firefox automatically updates itself by default, but you can always do a manual update. Learn how to update Firefox on Windows, Mac, or Linux.

Firefox options, preferences and settings

Firefox options, preferences and settings

Settings panels give you access to Firefox settings. This article describes what types of settings are available in each panel.

Back up and transfer your Firefox data to a new device

Back up and transfer your Firefox data to a new device

Learn how to transfer your browser data when switching devices using Firefox Sync. Back up your bookmarks, history, passwords, etc. with your Mozilla account.