Download, install and migration
Learn how to download Firefox on your desktop devices or move information to and from other browsers.
- Firefox versions and languages
- Copy your personal information from one browser to another
- Update Firefox to the latest version Firefox automatically updates itself by default but you can always do a manual update. Learn how to update Firefox on Windows, Mac or Linux.
- How to download and install Firefox on Windows This article describes how to download and install Firefox on Windows.
- Install Firefox on Linux This article will show you how to install Firefox on Linux.
- Find what version of Firefox you are using This article shows you how to find what version of Firefox you have to help you troubleshoot a problem or just so you'll know if it's up to date.
- How to download and install Firefox on Mac This article explains how to download and install Firefox on a Mac.
- What is the Mozilla Maintenance Service? Firefox and Thunderbird install this optional service to allow background updates without needing to click yes in the Windows User Account Control (UAC) dialog.
- Install an older version of Firefox Downgrading usually doesn't solve Firefox problems. This article gives you links to old versions of Firefox and some alternatives to downgrading.
- Uninstall Firefox from your computer This article describes how to remove the Firefox application from your computer and also how to remove the personal information that Firefox stores.
- Back up and restore information in Firefox profiles Firefox stores your personal information and settings in a profile folder. Learn how to back up and restore this important data.
- Recovering important data from an old profile If you need to create a new Firefox profile, find out how to recover information like bookmarks, history and passwords from an old one.
- Use the Profile Manager to create and remove Firefox profiles Firefox stores your personal information and settings in a profile folder. Learn to use the Profile Manager to work with different profiles.
- Firefox can't be opened after you install it on a Mac - How to fix Fix "Firefox.app can't be opened because the identity of the developer cannot be confirmed." error after installing Firefox on your Mac.