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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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Update Firefox to the latest release

What Windows 10 end of support means for Firefox users

How to install Firefox on Windows

Firefox support for Windows 7, 8 and 8.1

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

Find what version of Firefox you are using

How to download and install Firefox on Mac

Firefox security features warning on Linux

Uninstall Firefox from your computer

Custom installation of Firefox on Windows

Switch from Chrome to Firefox

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

Install an older version of Firefox

I found a fake Firefox update

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

Run Firefox on ChromeOS

Download Firefox on Windows from the Microsoft Store

Recover user data missing after Firefox update or reinstall

Firefox has ended support for Windows XP and Vista

Troubleshoot Firefox updates and the Helper tool

Manually back up and restore Firefox profile data

Importing Safari data into Firefox

What is the Mozilla Maintenance Service?

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

How the Firefox desktop launcher works

Firefox update notifications on Windows

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

Firefox has ended support for 32-bit Linux

Windows in S mode won't let me install Firefox

Fix “Support ending for Intel-based Apps” warning in Firefox for macOS

Install Firefox on Linux

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)

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

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

Firefox release notes - What's new and known issues

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