Updating from a previous version?

If you are upgrading from a previous version of Firefox, see Updating Firefox.

Before you install Firefox

Make sure that your computer meets the System Requirements.

Installing Firefox on Windows

Visit the Firefox download page in any browser (e.g. Microsoft Internet Explorer). The page will automatically recommend the best version(s) of Firefox for you.

Download the setup file to your computer. It is recommended that you exit all your other running programs. Double-click the file to start the Firefox install wizard.

• (Windows Vista) You may see a User Account Control message. In this case, allow the setup to run by clicking Continue.
• If Firefox is reported to be infected with a trojan or virus, see Firefox is reported to be infected with a trojan or virus.

You will be greeted with a welcome screen. Click Next to continue. This will bring you to the Setup Type screen. A Standard setup is selected by default, which will install Firefox with a recommended configuration that will work for most users.

For information about the Custom setup option, see Custom installation of Firefox on Windows.

• Check Use Firefox as my default browser if you want to use Firefox when you open a link in your mail application, an Internet shortcut, or HTML document.

Click Next.

Once the installation is complete, close the setup wizard by clicking Finish.

If the "Launch Firefox now" checkbox is checked, Firefox will start for the first time immediately after you click Finish.

Troubleshooting

• Firefox is already running but is not responding
• Firefox will not start

Congratulations, you are done installing Firefox!