52.0.1
Firefox Release
March 17, 2017
Version 52.0.1, first offered to Release channel users on March 17, 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
- Various security fixes
52.0.2
Firefox Release
March 28, 2017
Version 52.0.2, first offered to Release channel users on March 28, 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
- Fix new installs erroneously not prompting to change the default browser setting
- Fix a crash on startup on Linux
- Fix loading tab icons on session restore
- Use Nirmala UI as fallback font for additional Indic languages
pnamajck53.0
Firefox Release
April 19, 2017
Version 53.0, first offered to Release channel users on April 19, 2017
Today's Firefox release makes Firefox faster and more stable with a separate process for graphics compositing (the Quantum Compositor). Compact themes and tabs save screen real estate, and the redesigned permissions notification improves usability. Link Removed.
We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
new
fixed
- Link Removed for Windows users with the addition of compositor process separation (Quantum Compositor)
- Two new 'compact' themes available in Firefox, dark and light, based on the Firefox Developer Edition theme
- Lightweight themes are now applied in private browsing windows
- Reader Mode now displays estimated reading time for the page
- Windows 7+ users on 64-bit OS can select 32-bit or 64-bit versions in the stub installer
changed
- Various security fixes
- Updated the design of site permission requests to make them harder to miss and easier to understand
- Windows XP and Vista are no longer supported. XP and Vista users running Firefox 52 will continue to receive security updates on Firefox ESR 52.
- 32-bit Mac OS X is no longer supported. 32-bit Mac OS X users can switch to Firefox ESR 52 to continue receiving security updates.
- Updates for Mac OS X are smaller in size compared to updates for Firefox 52
- The last few characters of shortened tab titles fade out instead of being replaced by ellipses to keep more of the title visible
- Ended Firefox Linux support for processors older than Pentium 4 and AMD Opteron
- New visual design for audio and video controls
53.0.2
Firefox Release
May 5, 2017
Version 53.0.2, first offered to Release channel users on May 5, 2017
fixed
changed
- Make form validation errors and date picker panel visible to the user (Bug 1341190)
- Various security fixes
- The non-standard showDialog argument to window.find is now ignored (Bug 1348409)
- Reference link to 53.0 release notes
53.0.3
Firefox Release
May 19, 2017
Version 53.0.3, first offered to Release channel users on May 19, 2017
fixed
- Fix excessive resource usage from the captive portal detection service (bug 1359697)
- FIx hangs when using a proxy with NTLM authentication (bug 1360574)
changed
- Bump preloaded security information expiration times (bug 1364240)
- Reference link to 53.0.2 release notes
54.0
Firefox Release
June 13, 2017
Version 54.0, first offered to Release channel users on June 13, 2017
Today's release is the first to run Firefox using multiple operating system processes for web page content, making Firefox faster and more stable than ever. Learn more about how multiple processes strike a “just right” balance between performance and memory use on the Mozilla Blog. Dive into the details (including performance benchmarks) on Medium.
We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
new
fixed
- Added Burmese (my) locale
- Added support for multiple content processes (e10s-multi)
- Simplified the download button and download status panel
changed
- Various security fixes
developer
- Moved the mobile bookmarks folder to the main bookmarks menu for easier access
- Additional changes for web developers
- Added ability to create and save custom devices in Responsive Design Mode
54.0.1
Firefox Release
June 29, 2017
Version 54.0.1, first offered to Release channel users on June 29, 2017
Today's release is the first to run Firefox using multiple operating system processes for web page content, making Firefox faster and more stable than ever. Learn more about how multiple processes strike a “just right” balance between performance and memory use on the Mozilla Blog. Dive into the details (including performance benchmarks) on Medium.
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 Netflix issue on Linux (bug 1375708)
- Fix a PDF printing issue (bug 1366744)
- Fix a tab display issue when downloading files (bug 1373109)
- Fix a display issue when opening multiple tabs (bug 1371962)
- Fix a display issue of opening new tab (bug 1371995)
- Fix a display issue of tab title (bug 1357656)
55.0
Firefox Release
August 8, 2017
Version 55.0, first offered to Release channel users on August 8, 2017
Today's release brings innovative functionality, improvements to core browser performance, and more proof that we’re committed to making Firefox better than ever. New features include support for WebVR, making Firefox the first Windows desktop browser to support VR experiences. Performance changes include significantly faster startup times when restoring lots of tabs and settings that let users take greater control of our new multi-process architecture. We’ve also upgraded the address bar to make finding what you want easier, with search suggestions and the integration of our one-click search feature, and safer, by prioritizing the secure - https - version of sites when possible. Read what Nick Nguyen (VP, Firefox Product) has to say about Firefox 55, get historical perspective on the development of WebVR from Sean White (SVP, Emerging Technologies) in this Medium post, and read about all the new features for developers in Firefox 55 on Mozilla Hacks.
We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
new
changed
- Launched Windows support for WebVR, bringing immersive experiences to the web. See examples and try working demos at Mozilla VR.
- Added options that let users optimize recent performance improvements
- Setting to enable Hardware VP9 acceleration on Windows 10 Anniversary Edition for better battery life and lower CPU usage while watching videos
- Setting to modify the number of concurrent content processes for faster page loading and more responsive tab switching
- Simplified installation process with a streamlined Windows stub installer
- Firefox for Windows 64-bit is now installed by default on 64-bit systems with at least 2GB of RAM
- Full installers with advanced installation options are still available
- Improved address bar functionality
- Search with any installed one-click search engine directly from the address bar
- Search suggestions appear by default
- When entering a hostname (like pinterest.com) in the URL bar, Firefox resolves to the secure version of the site (https://www.pinterest.com) instead of the insecure version (http://www.pinterest.com) when possible
- Updated Sidebar for bookmarks, history, and synced tabs so it can appear at the right edge of the window as well as the left
- Added support for stereo microphones with WebRTC
- Simplified printing from Reader Mode
- Updated Firefox for OSX and macOS to allow users to assign custom keyboard shortcuts to Firefox menu items via System Preferences
- Browsing sessions with a high number of tabs are now restored in an instant
- Make screenshots of webpages, and save them locally or upload them to the cloud. This feature will undergo A/B testing and will not be visible for some users.
- Added Belarusian (be) locale
developer
- Modernized application update UI to be less intrusive and more aligned with the rest of the browser. Only users who have not restarted their browser 8 days after downloading an update or users who opted out of automatic updates will see this change.
- Firefox does not support downgrades, even though this may have worked in past versions. Users who install Firefox 55+ and later downgrade to an earlier version may experience issues with Firefox.
- Made the Adobe Flash plugin click-to-activate by default and allowed only on http://and https://URL schemes. (This change will not be visible to all users immediately. For more information see the Firefox plugin roadmap)
- Sites that don’t use SSL can no longer access Geolocation APIs to determine a user’s physical location
55.0.1
Firefox Release
August 10, 2017
Version 55.0.1, first offered to Release channel users on August 10, 2017
Today's release brings innovative functionality, improvements to core browser performance, and more proof that we’re committed to making Firefox better than ever. New features include support for WebVR, making Firefox the first Windows desktop browser to support VR experiences. Performance changes include significantly faster startup times when restoring lots of tabs and settings that let users take greater control of our new multi-process architecture. We’ve also upgraded the address bar to make finding what you want easier, with search suggestions and the integration of our one-click search feature, and safer, by prioritizing the secure - https - version of sites when possible. Read what Nick Nguyen (VP, Firefox Product) has to say about Firefox 55, get historical perspective on the development of WebVR from Sean White (SVP, Emerging Technologies) in this Medium post, and read about all the new features for developers in Firefox 55 on Mozilla Hacks.
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 regression the tab restoration process (bug 1388160)
- Fix a problem causing What's new pages not to be displayed (bug 1386224)
- Fix a rendering issue with some PKCS#11 libraries (bug 1388370)
- Disable the predictor prefetch (bug 1388160)
55.0.2
Firefox Release
August 16, 2017
Version 55.0.2, first offered to Release channel users on August 16, 2017
Today's release brings innovative functionality, improvements to core browser performance, and more proof that we’re committed to making Firefox better than ever. New features include support for WebVR, making Firefox the first Windows desktop browser to support VR experiences. Performance changes include significantly faster startup times when restoring lots of tabs and settings that let users take greater control of our new multi-process architecture. We’ve also upgraded the address bar to make finding what you want easier, with search suggestions and the integration of our one-click search feature, and safer, by prioritizing the secure - https - version of sites when possible. Read what Nick Nguyen (VP, Firefox Product) has to say about Firefox 55, get historical perspective on the development of WebVR from Sean White (SVP, Emerging Technologies) in this Medium post, and read about all the new features for developers in Firefox 55 on Mozilla Hacks.
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 potential issue when the username had some specific characters in the path (Bug 1388584)
- Fix an issue with new installation notification for sideload add-ons (Bug 1372448)
- Fix performance regressions with WebExtension (Bugs 1386937 & 1389381)
- Fix a regression with the popup menu (Bug 1388682)
55.0.3
Firefox Release
August 25, 2017
Version 55.0.3, first offered to Release channel users on August 25, 2017
fixed
- Fix file uploads to some websites, including YouTube (bug 1383518)
- Fix an issue with addons when using a path containing non-ascii characters (bug 1389160)
56.0
Firefox Release
September 28, 2017
Version 56.0, first offered to Release channel users on September 28, 2017
Today's release gives Firefox users a better experience with features like Firefox Screenshots, Send Tabs, and more control over the browser with an improved (and searchable) preferences section. It also includes incremental performance improvements that move us closer to our biggest release of the year, coming in November.
We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
New
Changed
- Launched Firefox Screenshots, a feature that lets users take, save, and share screenshots without leaving the browser
- Added support for address form autofill (en-US only)
- Updated Preferences
- Added search tool so users can find a specific setting quickly
- Reorganized preferences so users can more easily scan settings
- Rewrote descriptions so users can better understand choices and how they affect browsing
- Revised data collection choices so they align with updated Privacy Notice and data collection strategy
- Media opened in a background tab will not play until the tab is selected
- Improved Send Tabs feature of Sync for iOS and Android, and Send Tabs can be discovered even by users without a Firefox Account
Developer
- Replaced character encoding converters with a new Encoding Standard-compliant implementation written in Rust
- Added hardware acceleration for Link Removed
- Updated the Safe Browsing protocol to version 4
- Reduced update download file size by approximately 20 percent
- Improved security for verifying update downloads
Developer Information
- Added Layout Panel to CSS Grid DevTools
unresolved
- Startup crash with RelevantKnowledge adware installed. Firefox Support has helpful instructions to remove it.
- Users running Firefox for Windows over a Remote Desktop Connection (RDP) may find that audio playback is disabled due to increased security restrictions. Learn how to mitigate this issue until it is corrected in an upcoming release
- Startup crashes with 64-bit Firefox on Windows 7, for users of Lenovo's "OneKey Theater" software for IdeaPad laptops. To fix this crash, please re-install 32-bit Firefox.
- Due to a bug in Mac OS X High Sierra, fullscreen mode has some issues
56.0.1
Firefox Release
October 9, 2017
Version 56.0.1, first offered to Release channel users on October 9, 2017
fixed
changed
- Block D3D11 when using Intel drivers on Windows 7 systems with partial AVX support (bug 1403353)
- Users of 32-bit Firefox on 64-bit Windows are migrated to 64-bit Firefox for increased stability and security.
unresolved
- Reference link to 56.0 release notes
- Due to a bug in Mac OS X High Sierra, fullscreen mode has some issues
- Startup crash with RelevantKnowledge adware installed. Firefox Support has helpful instructions to remove it.
- Users running Firefox for Windows over a Remote Desktop Connection (RDP) may find that audio playback is disabled due to increased security restrictions. Learn how to mitigate this issue until it is corrected in an upcoming release
- Startup crashes with 64-bit Firefox on Windows 7, for users of Lenovo's "OneKey Theater" software for IdeaPad laptops. To fix this crash, please re-install 32-bit Firefox.
56.0.2
Firefox Release
October 26, 2017
Version 56.0.2, first offered to Release channel users on October 26, 2017
fixed
- Disable Form Autofill completely on user request (Bug 1404531)
- Fix for video-related crashes on Windows 7 (Bug 1409141)
- Correct detection for 64-bit GSSAPI authentication (Bug 1409275)
- Fix for shutdown crash (Bug 1404105)
57.0
Firefox Release
November 14, 2017
Version 57.0, first offered to Release channel users on November 14, 2017
Brace yourself for an all-new Firefox. It’s fast. Really fast. It’s over twice as fast as Firefox from 6 months ago, built on a completely overhauled core engine with brand new technology from our advanced research group, and graced with a clean, modern interface. Today is the first of several releases we’re calling Firefox Quantum, all designed to get to the things you love and the stuff you need faster than ever before. Experience the difference on desktops running Windows, macOS, and Linux; on Android, speed improvements are landing as well, and both Android and iOS have a new look and feel. To learn more about Firefox Quantum, visit the Mozilla Blog.
Making Firefox look, feel and perform faster was no small feat. Employees and volunteers from around the world worked in record time to create the best Firefox yet. We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
new
fixed
- A completely new browsing engine, designed to take full advantage of the processing power in modern devices
- A redesigned interface with a clean, modern appearance, consistent visual elements, and optimizations for touch screens
- A unified address and search bar. New installs will see this unified bar. Learn how to add the stand-alone search bar to the toolbar
- A revamped new tab page that includes top visited sites, recently visited pages, and recommendations from Pocket (in the US, Canada, and Germany)
- An updated product tour to orient new and returning Firefox users
- AMD VP9 hardware video decoder support for improved video playback with lower power consumption
- An expanded section in preferences to manage all website permissions
changed
- Various security fixes
developer
- Firefox now exclusively supports extensions built using the WebExtension API, and unsupported legacy extensions will no longer work. Learn more about our efforts to improve the performance and security of extensions
- The browser's autoscroll feature, as well as scrolling by keyboard input and touch-dragging of scrollbars, now use asynchronous scrolling. These scrolling methods are now similar to other input methods like mousewheel, and provide a smoother scrolling experience
- The content process now has a stricter security sandbox that blocks filesystem reading and writing on Linux, similar to the protections for Windows and macOS that shipped in Firefox 56
- Middle mouse paste in the content area no longer navigates to URLs by default on Unix systems
- Removed the toolbar Share button. If you relied on this feature, you can install the Share Backported extension instead.
- Some older versions of the ATOK IME, including ATOK 2006, 2008, 2009 and 2010, can cause crashes and are therefore disabled on the Windows 64-bit version of Firefox Quantum. To fix those incompatibility issues, please use a newer version of ATOK or one of other IMEs.
- The default font for Japanese text is now Meiryo
Developer Information
- Complete visual refresh of both the Light and Dark DevTools themes, matching the new visual style of Firefox Quantum
- The Inspector shows the values of CSS variables on hover
- Completely new and re-designed Console panel. Joining the Debugger and the Network Monitor, the Console has been rewritten using modern web technologies such as React and Redux. It now also allows to inspect objects in context.
unresolved
- Users running Firefox for Windows over a Remote Desktop Connection (RDP) may find that audio playback is disabled due to increased security restrictions. Learn how to mitigate this issue until it is corrected in an upcoming release
- Users running screen readers may experience performance issues and are advised to use Firefox ESR until performance issues are resolved in an upcoming future release
- On Windows and Linux, Firefox crashes occasionally on Intel Broadwell-U processors with old microcode. Windows users should ensure Windows Update is set to install updates. Linux users should ensure that the distribution package for Intel microcode is installed.
57.0.1
Firefox Release
November 29, 2017
Version 57.0.1, first offered to Release channel users on November 29, 2017
Brace yourself for an all-new Firefox. It’s fast. Really fast. It’s over twice as fast as Firefox from 6 months ago, built on a completely overhauled core engine with brand new technology from our advanced research group, and graced with a clean, modern interface. Today is the first of several releases we’re calling Firefox Quantum, all designed to get to the things you love and the stuff you need faster than ever before. Experience the difference on desktops running Windows, macOS, and Linux; on Android, speed improvements are landing as well, and both Android and iOS have a new look and feel. To learn more about Firefox Quantum, visit the Mozilla Blog.
Making Firefox look, feel and perform faster was no small feat. Employees and volunteers from around the world worked in record time to create the best Firefox yet. We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
Firefox updated to Version 57.0.1
57.0.2
Firefox Release
December 7, 2017
Version 57.0.2, first offered to Release channel users on December 7, 2017
Brace yourself for an all-new Firefox. It’s fast. Really fast. It’s over twice as fast as Firefox from 6 months ago, built on a completely overhauled core engine with brand new technology from our advanced research group, and graced with a clean, modern interface. Today is the first of several releases we’re calling Firefox Quantum, all designed to get to the things you love and the stuff you need faster than ever before. Experience the difference on desktops running Windows, macOS, and Linux; on Android, speed improvements are landing as well, and both Android and iOS have a new look and feel. To learn more about Firefox Quantum, visit the Mozilla Blog.
Making Firefox look, feel and perform faster was no small feat. Employees and volunteers from around the world worked in record time to create the best Firefox yet. We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
fixed
- Block old versions of G Data Endpoint Security for crashing Firefox on start up - Windows only (bug 1421991)
- Fix a regression with WebGL and D3D9 - Windows only
57.0.3
Firefox Release
December 28, 2017
Version 57.0.3, first offered to Release channel users on December 28, 2017
fixed
- Fix a crash reporting issue that inadvertently sends background tab crash reports to Mozilla without user opt-in (bug 1427111)