Update Firefox to the latest release

Revision Information
  • Revision id: 243623
  • Created:
  • Creator: AliceWyman
  • Comment: added warning about closing Firefox before installing from Mozilla's download page
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: AliceWyman
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: AliceWyman
Revision Source
Revision Content
Note: If you use your Linux distribution's packaged version of Firefox, you will need to wait for an updated package to be released to its package repository. This article only applies if you installed Firefox manually (without using your distribution's package manager).
Note: If you installed Firefox from the Microsoft Store, then you will receive Firefox updates through the Microsoft Store. This article only applies if you installed Firefox by downloading it from Mozilla. To check for Firefox updates on the Microsoft Store, see this Microsoft article.

By default, Firefox updates automatically. You can always check for updates at any time, in which case an update is downloaded, but it is not installed until you restart Firefox.

Update Firefox

  1. Click the menu button Fx89menuButton at the right side of the Firefox toolbar, go to Help, and select About Firefox.Click the menu button Fx57Menu, go to Fx57HelpHelp and select About Firefox.In the menu bar, open the Firefox menu and choose About Firefox. The About Mozilla FirefoxAbout Firefox window will open.
  2. Firefox will check for updates automatically. If an update is available, it will be downloaded.
    fx91AboutDownloadingUpdatefx70Linux-AboutFirefox-Downloadingfx71macOS-AboutFirefox-Downloading
  3. When the download is complete, click Restart to update Firefox.
    fx91AboutRestartUpdatefx70Linux-AboutFirefox-Restartfx71macOS-AboutFirefox-Restart
Important: If the update did not start, did not complete or there was some other problem, you can go to the Systems & Languages page to download and install the latest version of Firefox for your system and language. You can also use this download page (see How to install Firefox on WindowsInstall Firefox on LinuxHow to download and install Firefox on Mac for more information).
  • If you use Firefox to download the installer: Save the download to your computer and then close Firefox before starting the installation.
  • Stay safe: Download only from the official Mozilla links above to avoid malware and other online threats.

Note: Update settings can be changed in Firefox Settings . In the Menu bar at the top of the screen, click Firefox and select Settings (select Preferences on older macOS versions).Click the menu button Fx89menuButton and select Settings. In the General panel, go to the Firefox Updates section.