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How to install Firefox and keep it up to date
Update Firefox to the latest release
Firefox automatically updates itself by default, but you can always do a manual update. Learn how to update Firefox on Windows, Mac, or Linux.
Firefox Firefox 
Last updated: 07/29/2023
Windows 10 warns me to use a "Microsoft-verified" app
Windows 10 may interrupt your Firefox install with a warning about "Microsoft-verified apps". Firefox is safe to install and use, so choose "install anyway".
Firefox Firefox Last updated: 04/26/2023
Install Firefox on Linux
This article describes how to download and install Firefox on Linux.
Firefox Firefox Last updated: 02/05/2024
How to install Firefox on Windows
This article describes how to download and install Firefox on Windows.
Firefox Firefox Last updated: 05/14/2024
Find what version of Firefox you are using
Learn how to find out what Firefox version you are using, to help troubleshoot a problem or just to know if Firefox is up to date.
Firefox Firefox Last updated: 06/04/2023
Firefox users on Windows 7, 8 and 8.1 moving to Extended Support Release
Firefox version 115 ESR will be the last supported release for Windows 7, 8 and 8.1.
Firefox Firefox Last updated: 03/23/2024
How to download and install Firefox on Mac
This article explains how to download and install Firefox on a Mac.
Firefox Firefox Last updated: 05/18/2022
Download Firefox on Windows from the Microsoft Store
The "Mozilla Firefox" app is available from the Microsoft Store for Windows 10 and Windows 11. Learn how to install it.
Firefox Firefox Last updated: 05/14/2024
Firefox has ended support for Windows XP and Vista
Firefox version 52.9.0 ESR was the last supported release for Windows XP and Windows Vista. No further security updates will be provided for those systems.
Firefox Firefox Last updated: 11/26/2023
Firefox users on macOS 10.12, 10.13 and 10.14 moving to Extended Support Release
Firefox version 115 ESR will be the last supported release for macOS 10.12, 10.13 and 10.14
Firefox Firefox Last updated: 03/23/2024
Uninstall Firefox from your computer
This article describes how to uninstall the Firefox application from your computer and also how to remove the personal information that Firefox stores.
Firefox Firefox Last updated: 07/12/2023
I found a fake Firefox update
What to do if you spot fake notices claiming to contain an "urgent" or "critical" Firefox update.
Firefox Firefox Last updated: 06/06/2022
Windows in S mode won't let me install Firefox
You cannot install Firefox from Mozilla or from the Microsoft Store on Windows in S mode. You must first switch out of S mode. Learn more.
Firefox Firefox Last updated: 03/05/2022
What is the Mozilla Maintenance Service?
Firefox and Thunderbird install Mozilla Maintenance Service to allow seamless background updates. Learn how it works and how to disable or remove it.
Firefox, Thunderbird Firefox, Thunderbird Last updated: 04/02/2023
Recover user data missing after Firefox update
If your bookmarks, passwords, preference settings and other data are missing, it may be available in another Firefox profile. Learn more.
Firefox Firefox Last updated: 11/21/2022
Install an older version of Firefox
Downgrading to a previous Firefox version doesn't solve most problems. This article links to older versions and provides some alternatives.
Firefox Firefox Last updated: 1week, 1day ago
How do I tell if I have the 32-bit or 64-bit Firefox?
Not sure whether you're running 32-bit or 64-bit Firefox on your Windows or Linux computer? This article explains how to find out.
Firefox Firefox Last updated: 08/27/2021
Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release
Firefox 78 was the last supported version for Mac OS X 10.9, 10.10 and 10.11. Users were moved to Firefox Extended Support Release (ESR).
Firefox, Firefox for Enterprise Firefox, Firefox for Enterprise Last updated: 01/07/2022
Will Firefox version 100 work on Windows 7?
On Windows 7, Microsoft update KB4474419 is needed to install Firefox 100 or above without any issues. Learn more.
Firefox Firefox Last updated: 06/30/2023
Firefox release notes - What's new and known issues
Links to Firefox release notes for Desktop, Android and iOS.
Firefox, Firefox for Android, Firefox for iOS Firefox, Firefox for Android, Firefox for iOS Last updated: 01/05/2023
