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  1. Make Firefox your default browser | Firefox Help - Mozilla Support

    May 14, 2024 · How to make Web links open in Firefox automatically by setting it as the default browser on your computer.

  2. 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.

  3. 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.

  4. 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 …

  5. 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 …

  6. Appearance Panel - Layout, Message List, Card View, Table View, …

    Aug 29, 2025 · An overview of the Appearance panel in the Thunderbird app settings including: layout, card and table view, sorting and threading settings

  7. Cookies - Information that websites store on your computer

    Sep 13, 2025 · What is a cookie? A cookie is information stored on your computer by a website you visit. In some browsers, each cookie is a small file but in Firefox, all cookies are stored in …

  8. 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 …

  9. 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 …

  10. Profile Manager - Create, remove or switch Firefox profiles

    Jul 30, 2025 · Firefox saves your personal information such as bookmarks, passwords and user preferences in a set of files called your profile, which is stored in a separate location from the …