Mozilla Firefox browser adds Windows Hello authentication support

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The Mozilla Firefox internet browser updated to Version 66.0 and, with this update, added support for Microsoft’s Windows Hello authentication. This means that after installing the latest update, Firefox users on a compatible Windows 10 device will be able to use their face, fingerprint, and external security keys for authentication on supported websites.

Other noteworthy changes made with the update to Version 66.0 include a new setting that disables autoplay sound on websites, improvements to search, better scrolling on web pages, redesigned certificate error pages, and general performance improvements.

Here’s the full release notes:


  • Firefox now prevents websites from automatically playing sound. You can add individual sites to an exceptions list or turn blocking off. To learn more about block autoplay, which will be rolled out gradually to all users, visit the Mozilla blog.
  • Improved search experience:
  • Find a specific webpage faster when you have a lot of tabs open: You can now search within all of your open tabs from the tab overflow menu
  • Easier search via a redesigned new tab in Private Windows
  • Smoother scrolling: Scroll anchoring keeps content from jumping as images and ads load at the top of the page
  • Improved performance and better user experience for extensions:
  • Extensions now store their settings in a Firefox database, rather than individual JSON files, making every site you visit faster
  • A redesigned keyboard shortcuts section in about:addons makes it easier to view and adjust default shortcuts
  • Redesigned certificate error pages help you better understand and resolve issues, including identification of certificate issuers for anti-virus software
  • Added basic support for macOS Touch Bar
  • Experimenting with an improved Pocket experience in New Tab with different layouts and more topical content
  • Improved performance and reduced crash rates by doubling web content loading processes from 4 to 8
  • Easier, passwordless security: Added support for Windows Hello on Windows 10, allowing you to use your face, fingerprint, or external security keys for website authentication


  • The Dark and Light Firefox themes now override the system setting for title bar accent color on Windows 10
  • Linux users: Resolved an issue that caused Firefox to freeze when downloading files
  • Various security fixes


  • System title bar is hidden by default to match Gnome guideline for Linux users


  • DevTools Inspector is now fully usable when the Debugger is paused
  • Lowered priority of setTimeout and setInterval during page load to improve overall page load performance
  • Fixed: <button> element is no longer special cased in event dispatch, per latest specifications

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