Support/Firefox140

Firefox 140 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:

• Answer questions in the support forum
• Write help articles
• Localize support content
• Provide support on social media channels
• Respond to mobile store reviews

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

• Desktop 140.0 Release Notes
• ESR 128.12.0 Release Notes
• ESR 115.25.0 Release Notes
• Firefox for Enterprise 140 Release Notes
• Firefox for developers 140 Release Notes
• Firefox for Android 140.0 Release Notes
• Firefox for iOS 140.0 Release Notes

Dot releases

TBD

Bug & feedback boards

• Firefox bug board
• Firefox feedback board

Contributor discussions

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

• Desktop release discussion
• Mobile release discussion
• Localization discussion

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 140

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

Firefox Desktop content update

Updates for extensions menu in toolbar (win only)
Description:	Users can now hide the extensions menu in the toolbar.
Content request:	[1]
KB articles:	https://support.mozilla.org/kb/extensions-button	Articles update
	https://support.mozilla.org/kb/how-stop-firefox-making-automatic-connections
	https://support.mozilla.org/kb/unable-install-add-ons-extensions-or-themes
	https://support.mozilla.org/kb/use-themes-change-look-of-firefox
	https://support.mozilla.org/kb/troubleshoot-extensions-themes-to-fix-problems
https://support.mozilla.org/kb/disable-or-remove-add-ons
https://support.mozilla.org/kb/reporting-extensions-and-themes-abuse
https://support.mozilla.org/en-US/kb/re-enable-add-ons-disabled-when-updating
https://support.mozilla.org/en-US/kb/built-themes-firefox-alternative-complete-themes
https://support.mozilla.org/en-US/kb/how-update-add-ons
https://support.mozilla.org/en-US/kb/if-another-extension-interferes-mozilla-vpn
https://support.mozilla.org/en-US/kb/review-installed-extensions
https://support.mozilla.org/en-US/kb/extensions-private-browsing
https://support.mozilla.org/en-US/kb/find-and-install-add-ons-add-features-to-firefox
https://support.mozilla.org/en-US/kb/manage-extension-shortcuts-firefox
https://support.mozilla.org/en-US/kb/personalized-extension-recommendations
https://support.mozilla.org/en-US/kb/extension-changed-my-new-tab-page
https://support.mozilla.org/en-US/kb/manage-optional-permissions-extensions
https://support.mozilla.org/en-US/kb/add-ons-cause-issues-are-on-blocklist
https://support.mozilla.org/en-US/kb/troubleshoot-issues-related-to-add-ons
https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox
https://support.mozilla.org/en-US/kb/access-your-add-ons-firefox-accounts
https://support.mozilla.org/en-US/kb/extensions-private-browsing
https://support.mozilla.org/en-US/kb/add-on-badges
https://support.mozilla.org/en-US/kb/quarantined-domains
https://support.mozilla.org/en-US/kb/cannot-remove-add-on-extension-or-theme
https://support.mozilla.org/en-US/kb/remove-toolbar-has-taken-over-your-firefox-search
https://support.mozilla.org/en-US/kb/get-started-firefox-overview-main-features
https://support.mozilla.org/en-US/kb/recommended-extensions-program
https://support.mozilla.org/en-US/kb/facebook-container-isnt-working
https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode
https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
https://support.mozilla.org/en-US/kb/facebook-container-prevent-facebook-tracking
https://support.mozilla.org/en-US/kb/what-search-hijacking
https://support.mozilla.org/en-US/kb/firefox-advanced-customization-and-configuration
https://support.mozilla.org/en-US/kb/how-do-i-choose-what-information-sync-firefox
https://support.mozilla.org/en-US/kb/access-mozilla-services-firefox-account
https://support.mozilla.org/en-US/kb/change-your-default-search-settings-firefox
https://support.mozilla.org/en-US/kb/warning-unresponsive-script
https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data
https://support.mozilla.org/en-US/kb/use-troubleshooting-information-page-fix-firefox
https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

Adding Custom Search Engines
Description:	New way to add custom search engines to Firefox desktop
Content request:	[2]
KB article:	https://support.mozilla.org/kb/add-custom-search-engine-firefox	New article

How to unload tab
Description:	New feature in v140 to unload tab(s) to reduce Firefox's memory usage
Content request:	[3]
KB article:	https://support.mozilla.org/kb/unload-tabs-reduce-memory-usage-firefox/	New article

Update to address autofill article - Australia and India rollout
Description:	As title
Content request:	[4]
KB article:	https://support.mozilla.org/kb/automatically-fill-your-address-web-forms	Article update

Address autofill article - Italy, Poland and Austria rollout
Description:	As title
Content request:	[5]
KB article:	https://support.mozilla.org/kb/automatically-fill-your-address-web-forms	Article update

Chrome Import Changes on Windows -- Passwords via CSV, Payment methods disabled
Description:	Feature description
Content request:	[6]
KB articles:	https://support.mozilla.org/kb/import-bookmarks-google-chrome	Article update
	https://support.mozilla.org/kb/import-data-another-browser	Article update

bug1961945
Description:	TBD
Content request:	[7]
KB article:	https://support.mozilla.org/kb/on-device-models	New article