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  1. Make Firefox your default browser on Windows | Firefox Help

    Oct 7, 2025 · Whether you're using Windows 10 or the latest Windows 11, this guide will help you set Firefox as your default browser with minimal fuss. Setting Firefox as your default browser …

  2. 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 …

  3. Firefox won't start - find solutions | Firefox Help - Mozilla Support

    Sep 1, 2023 · Firefox won't start - find solutions Firefox Firefox Last updated: 9/1/23 22% of users voted this helpful This article describes what to do if Firefox does not open when you click the …

  4. Client Challenge - Mozilla Support

    Learn the basics of Firefox, including personalization, new tab control, and more to get started with this browser.

  5. Troubleshoot and diagnose Firefox problems - Mozilla Support

    Sep 19, 2025 · Note: When you refresh Firefox, your bookmarks, browsing history, open tabs, windows, passwords, cookies and web form auto-fill information will be saved. However, your …

  6. Firefox Help - Mozilla Support

    Restore bookmarks, passwords, and data from an old Firefox profile Use Troubleshoot Mode in Firefox Back up and restore information in Firefox profiles View All 12 Articles

  7. Download Firefox on Windows from the Microsoft Store

    May 14, 2024 · The "Mozilla Firefox" app is available from the Microsoft Store for Windows 10 and Windows 11. Learn how to install it.

  8. 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.

  9. Change Firefox options, preferences and settings | Firefox Help

    Dec 2, 2025 · Firefox Settings let you customize how your browser works, from restoring sessions and blocking ads to syncing data and managing privacy. This article explains each settings …

  10. How to download and install Firefox on Mac | Firefox Help

    Sep 22, 2025 · Download and install Firefox on Mac To download and install Firefox on Mac: Visit the Firefox download page in any browser (for example, Safari). It will automatically detect the …