Support/Firefox156

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Revision as of 12:36, 22 September 2026 by Kelimutu (talk | contribs) (→‎Known studies/experiments: adding share button experiment)


Firefox 156 release information

Disclaimer

The following information is intended for members of the Mozilla Support community for the purpose of supporting users in the Mozilla Support platform. Mozilla Support is a community of enthusiastic volunteers and employees trying to support Mozilla's users around the globe. You can join us by contributing through the following ways:

To learn more about how to stay updated with Firefox release information, trending, and known issues, please also check out How to stay updated with Firefox release

Release notes

Dot releases

TBD

Contributor discussions

Please refer to the following contributor forum threads to learn more about known issues and discuss with other contributors:

You can also join our Matrix channel to ask questions/join community discussion.

Stay updated

Apart from sharing release information, there are other ways to stay updated with product release and community updates:

  • Community call: We run a monthly community call (usually on the same week we release a new Firefox version). Check our schedule here and don't hesitate to join the call in person if you can!
  • Newsletter: Consider subscribing to Firefox Daily Digest to get daily updates (Mon-Fri) about Firefox from across the internet.

What's new in Firefox 156

Content in this page is being updated periodically as we're rolling out the release.

Firefox Desktop content update

No content updates specific to Firefox 156.

Firefox for Android content update

No content updates specific to Firefox 156.

Firefox for iOS content update

No content updates specific to Firefox 156.

Known studies/experiments

Platform Studies/experiments Description Size Related discussions Forum tag
Firefox desktop Share button in the URL bar - 10% of en-us users - -

Product discussions on Mozilla Connect

Check out top voted requests on Mozilla Connect.

Known issues

Platform Issue Known bug/Related discussions Fix/workaround
Desktop Fullscreen videos in Windows leave taskbar visible bug 2072895 pres F11 (+prefs in bug)

Known incidents

Post-release