Firefox Release Notes

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

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74.0
Firefox Release

March 10, 2020

Version 74.0, first offered to Release channel users on March 10, 2020

We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox.

New

  • Your login management has improved with the ability to reverse alpha sort (Name Z-A) in Lockwise, which you can access under Logins and Passwords.

  • Firefox now makes importing your bookmarks and history from the new Microsoft Edge browser on Windows and Mac simple.

  • Add-ons installed by external applications can now be removed using the Add-ons Manager (about:addons). Going forward, only users can install add-ons; they cannot be installed by an application.

  • Facebook Container prevents Facebook from tracking you around the web - Facebook logins, likes, and comments are automatically blocked on non-Facebook sites. But when you need an exception, you can now create one by adding custom sites to the Facebook Container.

  • Firefox now provides better privacy for your web voice and video calls through support for mDNS ICE by cloaking your computer’s IP address with a random ID in certain WebRTC scenarios.

Fixed

  • Various security fixes.

  • We have fixed issues involving pinned tabs such as being lost. You should also no longer see them reorder themselves.

Changed

  • When a video is uploaded with a batch of photos on Instagram, the Picture-in-Picture toggle would sit atop of the “next” button. The toggle is now moved allowing you to flip through to the next image of the batch.

  • On Windows, Ctrl+I can now be used to open the Page Info window instead of opening the Bookmarks sidebar. Ctrl+B still opens the Bookmarks sidebar making keyboard shortcuts more useful for our users.

  • <strike>We have disabled TLS 1.0 and TLS 1.1 to improve your website connections. Sites that don't support TLS version 1.2 will now show an error page.</strike>

    We reverted the change for an undetermined amount of time to better enable access to critical government sites sharing COVID19 information.

Developer

  • Developer Information
  • Firefox’s Debugger added support for debugging Nested Web Workers, so their execution can be paused and stepped through with breakpoints

Web Platform

Get the most recent version

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Your system doesn't meet the requirements to run Firefox.

Your system doesn't meet the requirements to run Firefox.

Please follow these instructions to install Firefox.

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