How to install Firefox on Windows

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  • Comment: Changed intro paragraph to be more user friendly. Took out jargon.
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Windows 10 may show you a warning when installing apps that aren't from the Microsoft store. See Windows 10 warns me to use a "Microsoft-verified" app for more information.

There are 3 avenues for downloading and installing Firefox, each with it's own installation file. One that does everything for you, one where you can choose options to customize the install, and another where you can choose the language along with customize the options.

This article walks you through using the install file that does everything for you. This is the quickest and easiest way.

This article only applies to Windows. For instructions to install Firefox on Mac, see How to download and install Firefox on Mac.For instructions to install Firefox on Linux, see Install Firefox on Linux.

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

Do not install Firefox using a limited Windows XP account. For more information, see Microsoft's support article How to determine your user account type in Windows.

  1. Visit this Firefox download page in any browser, such as Microsoft Internet Explorer or 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. fx91DownloadButtonWin10
    • If you use Microsoft Edge or Internet Explorer, a notification bar will appear at the bottom of the page with an option to open or run the Firefox Installer file.
    DownloadBarGoogleWin10
    • Click Open file on Microsoft Edge or Run on Internet Explorer, 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.
    Firefox-60-open-file-warning-win10
  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.
    Firefox-Installer-win10-UAC
  4. Wait for Firefox to finish installing.
    FirefoxInstaller-Aug2020
  5. When the installation is complete, Firefox will open.
    fx91InstallDoneWin10
Note: A notification bar with a Refresh Firefox… button may be shown at the bottom of the page, if Firefox was previously installed. See Refresh Firefox - reset add-ons and settings to learn more.
Congratulations, you are done installing Firefox!

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

FirefoxShortcut

Having problems?

Here are some articles that can help you:

If you need more help, you can always get community support.

For advanced users

The streamlined Firefox Installer installs a suitable Firefox version for your language and operating system. For example, on 64-bit Windows, it installs the 64-bit version of Firefox (details here). To install Firefox in 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. Options available in the full, offline installer are described in the article, Custom installation of Firefox on Windows.