« Back to Software Grid

Firefox ESR is free to download from the vendor.

How to Obtain



  • Installing Firefox ESR will overwrite your existing installation of Firefox.
  • Bookmarks or browsing history will not be lost, but some extensions and other add-ons might not work until updates for them are available.


About this Version 

Firefox Extended Support Release (ESR) is intended for groups who deploy and maintain the desktop environment in large organizations.

Key features:

  • ESR is designed for Companies and Educational Institutions for increased internal support and access to MIT Systems
  • Add the search field to the new tab page
  • Block malware from downloaded files
  • New security features
  • System requirements