Firefox for Enterprise 84 - Release notes

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Except where noted, everything here applies to both Firefox 84 and the Firefox 78.6 ESR.

Table of Contents

Bug fixes

  • The WebsiteFilter did not block viewing the source of blocked websites. This was fixed in bug 1465847.
  • In some cases, if there was an error installing an extension via policy, other extensions wouldn't install. This was fixed in bug 1674006.
  • On Windows, the uninstaller no longer asks for UAC permission it's not needed. This was fixed in bug 1639613.


  • The Preferences policy has been updated to support preferences that begin with spellchecker. and pdfjs..

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