Add custom search engines in Firefox | Firefox Help
Sep 19, 2025 · Learn how to add custom search engines in Firefox 140 and above, from the search field of supported websites or in Firefox settings.
Troubleshoot and diagnose Firefox problems - Mozilla Support
Sep 19, 2025 · This article includes a series of steps you can follow, that will help you fix most problems with Firefox.
Set Firefox as your mail-to default on Windows | Firefox Help
Aug 29, 2025 · Learn how to set Firefox as your MAILTO default on Windows and configure it to handle mail links seamlessly.
Client Challenge - Mozilla Support
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How to install Firefox on Windows | Firefox Help
Oct 7, 2025 · This article explains how to install Firefox on Windows, either with a simple online installer from Mozilla or from the Microsoft Store. If you need a full, offline installer with custom options, see …
Thunderbird and Gmail | Thunderbird Help - Mozilla Support
Oct 23, 2025 · Thunderbird can be set up to work seamlessly with Google's Gmail. Messages will be synchronized between your local version of Thunderbird and web-based Gmail.
Choose your preferred PDF viewer in Firefox | Firefox Help
Feb 27, 2025 · When Firefox is set as the default PDF viewer, it automatically opens PDF files in the built-in viewer. However, you can choose to use another application to view your downloaded PDF …
Enhanced Tracking Protection in Firefox for desktop
Oct 16, 2025 · Enhanced Tracking Protection in Firefox automatically protects your privacy as you browse. It blocks trackers that follow you around online to collect information about your browsing …
Manage Firefox with Microsoft Endpoint Manager (Intune)
Mar 29, 2025 · Note: Microsoft has a new feature in preview that makes it much easier to import ADMX templates into Intune. We strongly recommend using it if you can. For more information, see Import …
Update Firefox to the latest release | Firefox Help
Oct 10, 2025 · Firefox automatically updates itself by default, but you can always do a manual update. Learn how to update Firefox on Windows, Mac, or Linux.