The World of Windows

Windows in S mode does not allow installation of apps from outside of the Microsoft Store, so you will not be able to install Waterfox from Waterfox’s website. Although Waterfox is available from the Microsoft Store, it does not work on Windows in S mode and installation is currently disabled. To install Waterfox, you must switch out of Windows S mode . To learn more, see the Windows 10 and Windows 11 in S mode FAQ at Microsoft Support. Afterwards, visit Waterfox’s Waterfox download page or the Microsoft Store to install Waterfox. For more information, see How to install Waterfox on Windows and Download Waterfox on Windows from the Microsoft Store . Windows 10 support will end in October 2025 After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend upgrading to Windows 11. More information Windows 10 in S mode is designed for secu...

In certain versions of Windows 10, you may receive a notification with a warning about Microsoft-verified apps when you run the Waterfox installer. Any copy of Waterfox downloaded from www.waterfox.net is safe to install , so choose “ Install anyway ”. Note You can also download and install Waterfox from the Microsoft Store . Using Windows 10 in S mode? See Windows in S mode won’t let me install Waterfox . If you do not see the option to “ Install anyway ”, follow the steps below to change your system settings. Open the Windows 10 start menu and select Settings . Click on Apps in the Windows Settings menu. In the Apps & features section go to Choose where to get apps , click on the dropdown menu below and select one of the options that allows you to install from Anywhere . Run the Waterfox Installer again. Your Windows may now allow it to install Waterfox.

If Waterfox starts up without your bookmarks, passwords, saved tabs and other settings, check whether your data is available in a different profile . This can happen because Waterfox creates a dedicated profile for each Waterfox installation . To recover your Waterfox data and settings from another profile: Type about:profiles into the Waterfox address bar and press the Enter key. This will open the About Profiles page. This page should list at least one profile and could list many. The profile that Waterfox is currently using will have this: This is the profile in use and it cannot be deleted. Please do not delete any profiles. Don’t use any Remove buttons. If you have another profile listed on this page, it may contain your missing profile data. You can click the Launch profile in new browser button to open another Waterfox window using that profile. If the other profile doesn’t contain your missing data, simply close that new window. If it does contain the missing data,...