This article explains how to install Firefox on Windows, either with a simple online installer from Mozilla, or from the Microsoft Store.

• If you need a full, offline installer with custom options, see Custom installation of Firefox on Windows.

Install from Mozilla’s download server

Before installing Firefox, see the Firefox System Requirements to make sure that your computer has the required operating system and recommended

To install Firefox on your computer:

1. Visit this Firefox download page in any browser, such as Microsoft Edge.
2. Click the Download Now button. The Firefox Installer that downloads will automatically offer you the best available version of Firefox for your computer. Windows 10 may show you a warning when installing apps that aren’t from the Microsoft store.
   • Click Open file in the Downloads notification on Microsoft Edge to start the process.
   • In other browsers, you may need to first save the Firefox installer to your computer, then open the file you downloaded.
     Note: If you see an Open File – Security Warning dialog, click Open or Run.
3. The User Account Control dialog may open, to ask you to allow the Firefox Installer to make changes to your computer. If this dialog appears, click Yes to start the installation.
4. Wait for Firefox to finish installing.
5. When the installation is complete, Firefox will open.

Note: A notification bar with a Refresh Firefox… button may be shown at the top of the page, if Firefox was previously installed.

Congratulations, you are done installing Firefox!

Double-click the Firefox icon that was placed on the desktop whenever you want to start Firefox.

For advanced users

The streamlined Firefox Installer installs a Firefox version suitable for your language and operating system. For example, on 64-bit Windows, it installs the 64-bit version of Firefox. To install Firefox for another language or operating system, or if you need a full, offline installer with custom options, download the Firefox Setup file from this download page.

Install from the Microsoft Store

Installing Firefox from the Microsoft store requires Windows 10 or Windows 11.

1. Click on the Windows icon located on the taskbar.
2. Type Microsoft Store.
3. Select the Microsoft Store from the results. This will take you to the Microsoft app store.
4. Type Firefox in the search bar and press Enter.
5. Select “Mozilla Firefox” from the applications available.
6. Click Get to start the installation process.