How to install Firefox on Windows
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This article describes how to download and install Firefox on Windows. To update from a previous version of Firefox, see Update Firefox to the latest release.
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.
- Visit this Firefox download page in any browser, such as Microsoft Internet Explorer or Microsoft Edge.
Alternatively, use this download link for the latest English (U.S.) Firefox version. - Click the button. The Firefox download page will automatically offer you the best available version of Firefox for your computer.
- If you use Microsoft Internet Explorer or Microsoft Edge, a notification bar will appear at the bottom of the page with the options to run the installer or save the file to your computer. Click 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 .
- Wait for Firefox to finish installing. When the installation is complete, Firefox will open.
- The image "Fx55stub-installing" does not exist.
For advanced users: The Firefox download page linked below automatically offers the best available version of Firefox for your computer and provides a streamlined online installer. If you need a full, offline installer, if you want to choose the language and operating system or if you want to customize your Firefox installation, visit the Systems & Languages page instead. You can download either the Windows (32-bit) Firefox version or, for 64-bit operating systems with Windows 7 and above, the Windows 64-bit version of Firefox (see this blog post for details). Options available in the full, offline installer are described in this article.
Having problems?
Here are some articles that can help you:
- Firefox won't start - find solutions
- "Firefox is already running but is not responding" error - How to fix
- If you see the message, Firefox cannot be installed. This version of Firefox requires a processor with SSE2 support. see Your hardware is no longer supported.