Tuesday, January 24, 2017

Mozilla Firefox Version 51.0 Released with Critical Security Updates

FirefoxMozilla sent Firefox Version 51.0 to the release channel today.  The update includes five (5) Critical, six (6) High, ten (10) Moderate and three (3) Low updates.  No additional changes are indicated in the release notes. 

Firefox ESR was updated to version 45.7.0.

The next scheduled release is March 7, 2017 (5 week cycle with release for critical fixes as needed).

26JAN2017 Update Note:   Firefox Version 51.0.1 was released .  From the Release Notes
  • Geolocation not working on Windows (Bug 1333516)
  • Multiprocess incompatibility did not correctly register with some add-ons (Bug 1333423)

Security Fixes:




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


  • Updated to NSS 3.28.1
  • Use 2D graphics library (Skia) for content rendering on Linux
  • Re-enabled E10s support for Russian (ru) locale


To get the update now, select "Help" from the Firefox menu, then pick "About Firefox."  Mac users need to select "About Firefox" from the Firefox menu. If you do not use the English language version, Fully Localized Versions are available for download.


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    May the wind sing to you and the sun rise in your heart...

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