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Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Installation and updates

Installation and updates

Learn how to install your favorite Mozilla products and keep them updated.

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What Windows 10 end of support means for Firefox users

Update Firefox to the latest release

Firefox support for Windows 7, 8 and 8.1

How to install Firefox on Windows

Windows 10 warns me to use a "Microsoft-verified" app

How to download and install Firefox on Mac

Back up and restore information in Firefox profiles

Firefox security features warning on Linux

Install Firefox on Linux

Custom installation of Firefox on Windows

Enable background updates on Firefox for Windows when Firefox is not running

Download Firefox on Windows from the Microsoft Store

Firefox users on macOS 10.12, 10.13 and 10.14 moving to Extended Support Release

Uninstall Firefox from your computer

Install an older version of Firefox

Firefox has ended support for Windows XP and Vista

Find what version of Firefox you are using

Run Firefox on ChromeOS

Switch from Chrome to Firefox

Troubleshoot Firefox updates and the Helper tool

I found a fake Firefox update

Recover user data missing after Firefox update or reinstall

Windows in S mode won't let me install Firefox

How the Firefox desktop launcher works

Update Firefox to prevent add-ons issues from root certificate expiration

What is the Mozilla Maintenance Service?

Firefox has ended support for 32-bit Linux

Importing Safari data into Firefox

Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release

Why do I get a harmful download message when downloading Firefox on Windows?

Resolve “The installation seems to be incomplete/corrupt” error in Firefox on Windows

How do I tell if I have the 32-bit or 64-bit Firefox?

64-bit Firefox crashes with Citrix's XenApp VM

Supported platforms and system requirements

Solutions for "Can not create temp folder archive" error when installing Firefox (Windows 10)

Firefox update notifications on Windows

Firefox release notes - What's new and known issues

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