How to change your default browser in Windows 10

This article applies only to Windows 10.
Windows 10 upgrade may reset your default browser to Microsoft Edge instead of Firefox. Follow these steps to set Firefox as your default browser.

  1. In the Menu bar at the top of the screen, click Firefox and select Preferences.Click the menu button Fx57Menu and select Options.Preferences.Settings.
  2. In the General panel, click Make Default….
    Fx57GeneralPanelStartup-MakeDefaultFx61GeneralPanelStartup-MakeDefaultFx67GeneralPanelStartup-MakeDefault
  3. The Windows Settings app will open with the Choose default apps screen.
  4. Scroll down and click the entry under Web browser. In this case, the icon will say either Microsoft Edge or Choose your default browser.
    default apps win10
  5. In the Choose an app screen, click Firefox to set it as the default browser.
    firefox default 10
  6. Firefox is now listed as your default browser. Close the window to save your changes.

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