Installation and updates Learn how to install your favorite Mozilla products and keep them updated. NgesiNgisi Windows 10 warns me to use a "Microsoft-verified" app Install Firefox on Linux How to install Firefox on Windows Update Firefox to the latest release Profiles - Where Firefox stores your bookmarks, passwords and other user data How to download and install Firefox on Mac Back up and restore information in Firefox profiles Firefox users on Windows 7, 8 and 8.1 moving to Extended Support Release Download Firefox on Windows from the Microsoft Store Find what version of Firefox you are using Custom installation of Firefox on Windows Run Firefox on ChromeOS Uninstall Firefox from your computer Firefox has ended support for Windows XP and Vista I found a fake Firefox update Recovering important data from an old profile Update Firefox to prevent add-ons issues from root certificate expiration Firefox users on macOS 10.12, 10.13 and 10.14 moving to Extended Support Release Profile Manager - Create, remove or switch Firefox profiles Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release Recover user data missing after Firefox update What is the Mozilla Maintenance Service? Importing Safari data into Firefox Solutions for "Can not create temp folder archive" error when installing Firefox (Windows 10) How do I tell if I have the 32-bit or 64-bit Firefox? Windows in S mode won't let me install Firefox Enable background updates on Firefox for Windows when Firefox is not running Install an older version of Firefox 64-bit Firefox crashes with Citrix's XenApp VM Resolve “The installation seems to be incomplete/corrupt” error in Firefox on Windows Firefox release notes - What's new and known issues