Installation and updates Learn how to install your favorite Mozilla products and keep them updated. In Engels Windows 10 warns me to use a "Microsoft-verified" app Update Firefox to the latest release How to install Firefox on Windows How to download and install Firefox on Mac Profiles - Where Firefox stores your bookmarks, passwords and other user data Download Firefox on Windows from the Microsoft Store Find what version of Firefox you are using Run Firefox on ChromeOS Recovering important data from an old profile Profile Manager - Create, remove or switch Firefox profiles Custom installation of Firefox on Windows Back up and restore information in Firefox profiles Firefox has ended support for Windows XP and Vista Firefox users on Windows 7, 8 and 8.1 moving to Extended Support Release Install an older version of Firefox Uninstall Firefox from your computer I found a fake Firefox update Recover user data missing after Firefox update Install Firefox on Linux Enable background updates on Firefox for Windows when Firefox is not running What is the Mozilla Maintenance Service? Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release Solutions for "Can not create temp folder archive" error when installing Firefox (Windows 10) Firefox users on macOS 10.12, 10.13 and 10.14 moving to Extended Support Release Windows in S mode won't let me install Firefox Importing Safari data into Firefox 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 Will Firefox version 100 work on Windows 7? Firefox release notes - What's new and known issues