When Firefox is installed from the Microsoft Store, changing your default browser to Firefox must be done manually, in Windows Settings. Note: Some users have reported issues related to the about:support page when using the Microsoft Store version of Firefox.
To install Firefox on your computer: Visit this Firefox download page in any browser, such as Microsoft Edge. Click the Download Now button. The Firefox Installer that downloads will automatically offer you the best available version of Firefox for your computer.
Download Firefox on Windows from the Microsoft Store The"Mozilla Firefox" app is available from the ...
Update Firefox to prevent add-ons issues from root certificate expiration Update to Firefox 128+ by March 14, 2025, to avoid issues with add-ons, DRM media and essential features due to an expiring root certificate.
To customize policies for Firefox on these operating systems, refer to Customize Firefox using policies.json. On Windows, policy support is implemented using Group Policy. Firefox supports setting policies via Active Directory as well as using Local Group Policy.
For example, if INSTALL_DIRECTORY_NAME is set to Firefox Release, then the installation path will be something like C:\Program Files\Firefox Release. The Program Files path used will be the correct one for the architecture of the application being installed and the locale/configuration of the machine; this setting is mainly useful to keep you from having to worry about those differences.
Install from Mozilla's download server. The latest Firefox for Android version from Mozilla's download server is not currently available on the Firefox download page but may be offered in the future (bug 1663735).
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Update Firefox. Click the menu button at the right side of the Firefox toolbar, go to Help, and select About Firefox. In the menu bar, open the Firefox menu and choose About Firefox. The About Mozilla Firefox About Firefox window will open. Firefox will check for updates automatically. If an update is available, it will be downloaded.
Download and install Firefox on Mac. To download and install Firefox on Mac: Visit the Firefox download page in any browser (for example, Safari). It will automatically detect the platform and language on your device and recommend the best version of Firefox for you. Click Download Firefox.