Mozilla Firefox 129.0.2

46.0.1
Firefox Release

May 3, 2016

Version 46.0.1, first offered to Release channel users on May 3, 2016


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



fixed

• Page loading issue related to antivirus software (Bug 1268922)
  
  
• Search plugin issue for various locales (Bug 1246494)
  
  
• Add-on signing certificate expiration (Bug 1267318)
  
  
• Service worker update issue (Bug 1267733)
  
  
• Build issue when jit is disabled (Bug 1266366)
  
  
• Limit Sync registration updates (Bug 1262312)

Click to expand...

47.0
Firefox Release

June 7, 2016

Version 47.0, first offered to Release channel users on June 7, 2016


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



new

• Support for Google’s Widevine CDM on Windows and Mac OS X so streaming services like Amazon Video can switch from Silverlight to encrypted HTML5 video.
  
  
• Enable VP9 video codec for users with fast machines
  
  
• Embedded YouTube videos now play with HTML5 video if Flash is not installed.
  
  
• View and search open tabs from your smartphone or another computer in a sidebar
  
  
• Allow no-cache on back/forward navigations for https resources
  
  
• Latgalu [ltg] locale added. Wikipedia tells us there are 164,500 daily speakers.
  

fixed

• Various security fixes
  

changed

• FUEL (Firefox User Extension Library) has been removed. Add-ons relying on it will stop working.
  
  
• The browser.sessionstore.restore_on_demand preference has been reset to its default value (true) to avoid e10s performance problems. Because faster is better!
  
  
• The Firefox click-to-activate plugin whitelist has been removed.
  

developer

• Web platform changes
  
  
• View, start,and debug registered Service Workers in the Service Workers developer tool
  
  
• Simulate Push messages in the Service Workers developer tool
  
  
• 'Start' button for service workers in about:debugging to start registered Service Workers
  
  
• Changes that can affect add-on compatibility
  
  
• Added support for ChaCha20/Poly1305 cipher suites
  
  
• Custom user agents supported in Responsive Design Mode
  
  
• Smart multi-line input in the Web Console
  

Developer Information
html5

• cuechange events are now available on TextTrack objects
  
  
• WebCrypto: PBKDF2 supports SHA-2 hash algorithms
  
  
• WebCrypto: RSA-PSS signature support

Click to expand...

47.0.1
Firefox Release

June 28, 2016

Version 47.0.1, first offered to Release channel users on June 28, 2016


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



fixed

• Selenium WebDriver may cause Firefox to crash at startup

Click to expand...

48.0
Firefox Release

August 2, 2016

Version 48.0, first offered to Release channel users on August 2, 2016


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



new

• Process separation (e10s) is enabled for some of you. Like it? Let us know and we'll roll it out to more.
  
  
• Roar for moar protection against harmful downloads! We've got your back
  
  
• Add-ons that have not been verified and signed by Mozilla will not load
  
  
• GNU/Linux fans: Get better Canvas performance with speedy Skia support. Try saying that three times fast
  
  
• WebRTC embetterments:
  • Delay-agnostic AEC enabled
  • Full duplex for GNU/Linux enabled
  • ICE Restart & Update is supported
  • Cloning of MediaStream and MediaStreamTrack is now supported
• Searching for something already in your bookmarks or open tabs? We added super smart icons to let you know
  
  
• Windows folks: Tab (move buttons) and Shift+F10 (pop-up menus) now behave as they should in Firefox customization mode
  
  
• The media parser has been redeveloped using the Rust programming language
  
  
• Windows 7 systems without Platform Update can now use D3D11 WARP

fixed

• Various security fixes
  
  
• Improved step debugging on last line of functions
  
  
• Heyo, Jabra & Logitech C920 webcam users. We fixed those pesky WebRTC bugs causing frequency distortions. Buh-bye, squeaky voice!

changed

• After version 48, SSE2 CPU extensions are going to be required on Windows
  
  
• So long to support for 10.6, 10.7 and 10.8. Now we can focus on where most Mac users are: 10.9. Don't forget to upgrade!
  
  
• Au revoir to Windows Remote Access Service modem Autodial

developer

• WebExtensions support is now considered as stable
  
  
• Workers can now use the Web Crypto API
  
  
• Want to move absolute & fixed positioned elements? (Who doesn't, right?) Now you can with our geometry editor.
  
  
• The memory tool now has a tree map view for your debugging pleasure. It's a little bit of "boo" and a whole lot of "ya."
  
  
• We're putting the spotlight on the background. Now you can debug WebExtensions background content scripts and background pages
  
  
• Content Security Policy (CSP) is now enforced for WebExtensions. (Who's down with CSP?)
  
  
• Old and busted: Error Console. New hotness: Browser Console for your debugging pleasure.
  
  
• Add-on development just got easier because you can reload them from about:debugging — because we're all about debugging.
  
  
• This theme is hot, hot, hot! Say hi to the Firebug theme for Developer Tools.
  
  
• Expand network requests from the console panel to view request details in line, so you can see things in context

Developer Information
unresolved

• On some websites using an important number of cookies, under certain conditions, this can cause the user to be logged out (1264192)

Click to expand...

48.0.1
Firefox Release

August 18, 2016

Version 48.0.1, first offered to Release channel users on August 18, 2016


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



fixed

• Fix an audio regression impacting some major websites (bug 1295296)
  
  
• Fix a top crash in the JavaScript engine (Bug 1290469)
  
  
• Fix a startup crash issue caused by Websense (Bug 1291738)
  
  
• Fix a different behavior with e10s / non-e10s on <select> and mouse events (Bug1291078)
  
  
• Fix a top crash caused by plugin issues (Bug 1264530)
  
  
• Fix an unsigned add-ons issue on Windows
  
  
• Fix a shutdown issue (Bug 1276920)
  
  
• Fix a crash in WebRTC

Click to expand...

48.0.2
Firefox Release

August 24, 2016

Version 48.0.2, first offered to Release channel users on August 24, 2016


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



fixed

• Fix a startup crash issue caused by Websense (Windows only) (Bug 1291738)

Click to expand...

49.0
Firefox Release

September 20, 2016

Version 49.0, first offered to Release channel users on September 20, 2016


new

• Updated Firefox Login Manager to allow HTTPS pages to use saved HTTP logins. It’s one more way Firefox is supporting Let’s Encrypt and helping users transition to a more secure web.
  
  
• Added features to Reader Mode that make it easier on the eyes and the ears
  • Controls that allow users to adjust the width and line spacing of text
  • Narrate, which reads the content of a page out loud
• Improved video performance for users on systems that support SSSE3 without hardware acceleration
  
  
• Added context menu controls to HTML5 audio and video that let users loops files or play files at 1.25x speed
  
  
• Enhancements for Mac users
  • Improved performance on OS X systems without hardware acceleration
  • Improved appearance of anti-aliased OS X fonts
• Improvements in about:memory reports for tracking font memory usage
  
  
• Improve performance on Windows systems without hardware acceleration

fixed

• Fixed an issue that prevented users from updating Firefox for Mac unless they originally installed Firefox. Now, those users as well as any user with administrative credentials can update Firefox.
  
  
• Various security fixes

changed

• Ended Firefox for Mac support for OS X 10.6, 10.7, and 10.8.
  
  
• Ended Firefox for Windows support for SSE processors
  
  
• Removed Firefox Hello
  
  
• Re-enabled the default for Graphite2 font shaping

developer

• Added a Cause column to the Network Monitor to show what caused each network request
  
  
• Introduced web speech synthesis API

Click to expand...

49.0.1
Firefox Release

September 23, 2016

Version 49.0.1, first offered to Release channel users on September 23, 2016


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



fixed

• Mitigate a startup crash issue caused by Websense (Windows only) (Bug 1304783)
  

• Reference link to Firefox 49.0 release notes

Click to expand...

49.0.2
Firefox Release

October 20, 2016

Version 49.0.2, first offered to Release channel users on October 20, 2016


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



new

• Asynchronous rendering of the Flash plugins is now enabled by default. This should improve performance and reduce crashes for sites that use the Flash plugin. (Bug 1307108)
  

fixed

• Change D3D9 default fallback preference to prevent graphical artifacts (Bug 1306465)
  
  
• Network issue prevents some users from seeing the Firefox UI on startup (Bug 1305436)
  
  
• Web compatibility issue with file uploads (Bug 1306472)
  
  
• Various security fixes
  
  
• Web compatibility issue with Array.prototype.values (Bug 1299593)
  

changed

• Diagnostic information on timing for tab switching (Bug 1304113)
  

• Fix a Canvas filters graphics issue affecting HTML5 apps (Bug 1304539)
  
  
• Reference link to Firefox 49.0.1 release notes

Click to expand...

50.0
Firefox Release

November 15, 2016

Version 50.0, first offered to Release channel users on November 15, 2016


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



new

• Updates to keyboard shortcuts
  
  • Set a preference to have Ctrl+Tab cycle through tabs in recently used order
  • View a page in Reader Mode by using Ctrl+Alt+R (command+alt+r on Mac)
• Added option to Find in page that allows users to limit search to whole words only
  
  
• Added Guarani (gn) locale
  
  
• Increased availability of WebGL to more than 98 percent of users on Windows 7 and newer
  
  
• Added download protection for a large number of executable file types on Windows, Mac and Linux
  
  
• Improved performance for SDK extensions or extensions using the SDK module loader
  
  
• Playback video on more sites without plugins with WebM EME Support for Widevine on Windows and Mac
  

fixed

• Fixed rendering of dashed and dotted borders with rounded corners (border-radius)
  
  
• Various security fixes
  

changed

• Added a built-in Emoji set for operating systems without native Emoji fonts (Windows 8.0 and lower and Linux)
  
  
• Blocked versions of libavcodec older than 54.35.1

Click to expand...

50.0.1
Firefox Release

November 28, 2016

Version 50.0.1, first offered to Release channel users on November 28, 2016


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



fixed

• Firefox crashes with 3rd party Chinese IME when using IME text
  
  
• Various security fixes

Click to expand...

50.0.2
Firefox Release

November 30, 2016

Version 50.0.2, first offered to Release channel users on November 30, 2016


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



fixed

• Various security fixes

Click to expand...

50.1.0
Firefox Release

December 13, 2016

Version 50.1.0, first offered to Release channel users on December 13, 2016


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



fixed

• Various security fixes

Click to expand...

51.0
Firefox Release

January 24, 2017

Version 51.0, first offered to Release channel users on January 24, 2017


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



new

• Added support for FLAC (Free Lossless Audio Codec) playback
  
  
• Improved reliability of browser data sync
  
  
• An even faster E10s! Tab Switching is better!
  
  
• Added Georgian (ka) and Kabyle (kab) locales
  
  
• A warning is displayed when a login page does not have a secure connection
  
  
• Added support for WebGL 2, with advanced graphics rendering features like transform feedback, improved texturing capabilities, and a new sophisticated shading language
  
  
• Firefox will save passwords even in forms that do not have “submit” events
  
  
• Improved video performance for users without GPU acceleration for less CPU usage and a better full screen experience
  
  
• Added a zoom button in the URL bar:
  
  • Displays percent above or below 100 percent when a user has changed the page zoom setting from the default
  • Lets users return to the default setting by clicking on the button
• Users can view passwords in the save password prompt before saving them
  
  
• Remove Belarusian (be) locale
  

fixed

• Various security fixes
  

changed

• Updated to Link Removed
  
  
• Re-enabled E10s support for Russian (ru) locale
  
  
• Use 2D graphics library (Skia) for content rendering on Linux

Click to expand...

51.0.1
Firefox Release

January 26, 2017

Version 51.0.1, first offered to Release channel users on January 26, 2017


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



fixed

• Multiprocess incompatibility did not correctly register with some add-ons (Bug 1333423)
  
  
• Geolocation not working on Windows (Bug 1333516)
  
  
• Reference link to 51.0 release notes

Click to expand...

52.0
Firefox Release

March 7, 2017

Version 52.0, first offered to Release channel users on March 7, 2017


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



new

• Added support for WebAssembly, an emerging standard that brings near-native performance to Web-based games, apps, and software libraries without the use of plugins.
  
  
• Implemented the Strict Secure Cookies specification which forbids insecure HTTP sites from setting cookies with the "secure" attribute. In some cases, this will prevent an insecure site from setting a cookie with the same name as an existing "secure" cookie from the same base domain.
  
  
• Added user warnings for non-secure HTTP pages with logins. Firefox now displays a “This connection is not secure” message when users click into the username and password fields on pages that don’t use HTTPS.
  
  
• Enabled multi-process Firefox for Windows users with touch screens
  
  
• Enhanced Sync to allow users to send and open tabs from one device to another.
  

fixed

• Various security fixes
  
  
• Improved text input for third-party keyboard layouts on Windows. This will address some keyboard layouts that
  
  • have chained dead keys
  • input two or more characters with a non-printable key or a dead key sequence
  • input a character even when a dead key sequence failed to compose a character

changed

• Removed support for Netscape Plugin API (NPAPI) plugins other than Flash. Silverlight, Java, Acrobat and the like are no longer supported.
  
  
• Display (but allow users to override) an “Untrusted Connection” error when encountering SHA-1 certificates that chain up to a root certificate included in Mozilla’s CA Certificate Program. (Note: Firefox continues to permit SHA-1 certificates that chain to manually imported root certificates.) Read more about the Mozilla Security Team’s plans to deprecate SHA-1
  
  
• Improved experience for downloads:
  
  • Notification in the toolbar when a download fails
  • Quick access to five most recent downloads rather than three
  • Larger buttons for canceling and restarting downloads
• Removed Battery Status API to reduce fingerprinting of users by trackers
  
  
• When not using Direct2D on Windows, Skia is used for content rendering
  
  
• Migrated Firefox users on Windows XP and Windows Vista operating systems to the extended support release (ESR) version of Firefox.
  

developer

• Enabled CSS Grid Layout, opening up a world of new possibilities for graphic design
  
  
• Improved security for screen sharing, which now shows a preview and no longer requires a whitelisted domain
  
  
• Redesigned Responsive Design Mode to include device selection, network throttling, and more
  

Developer Information
unresolved

• Link Removed

Click to expand...

changed

• Removed support for Netscape Plugin API (NPAPI) plugins other than Flash. Silverlight, Java, Acrobat and the like are no longer supported.

Click to expand...