Support/Firefox133
< Support
Firefox 133 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
Release notes
- Desktop 133.0 Release Notes
- ESR 115.18.0 Release Notes
- ESR 128.5.0 Release Notes
- Firefox for Enterprise 133 Release Notes
- Firefox for developers 133 Release Notes
- Firefox for Android 133.0 Release Notes
- Firefox for iOS 133.0 Release Notes
Bug boards
Dot releases
| Platform | Version | Release date | Notable fixes | Unresolved |
|---|---|---|---|---|
| Firefox for iOS | 133.2 | December 6, 2024 | Fixing the onboarding crash issue (see incident section below) | - |
| Firefox Desktop | 133.0.3 | December 10, 2024 | bug1934482, bug1930840, bug1933668, bug1934238 | - |
| Firefox & Focus for Android | 133.0.3 | December 10, 2024 | Various bug fixes | - |
| Firefox for iOS | 133.3 | December 11, 2024 | Minor fix | - |
| Firefox ESR | ESR128.5.2 ] | December 12, 2024 | crash caused by third-party software (bug1934258) | - |
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
- Support release scrum meeting
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 a week before Firefox release date). Check our schedule here and don't hesitate to join the call in person if you can!
- Firefox pod meeting: If you’re an NDA’d contributor, you can watch the recording of our Firefox Pod Meeting from AirMozilla to catch up with the latest train release. You can also subscribe to the AirMozilla folder by clicking on the Subscribe button in the top-right corner of the page to get notifications each time we add a new recording.
- Newsletter: Consider subscribing to Firefox Daily Digest to get daily updates (Mon-Fri) about Firefox from across the internet.
Content in this page is being updated periodically as we're rolling out the release.
What's new in Firefox 133
Firefox Desktop
| Tab overview menu update | ||
|---|---|---|
| Description: | We're adding the “Tabs from other devices” menu in the Tab Overview list. | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1931890 | |
| KB articles: | https://support.mozilla.org/en-US/kb/tab-overview-menu/ | KB updated |
| Update KB ETP Article to include Bounce Tracking Protection | ||
|---|---|---|
| Description: | We're shipping Bounce Tracking Protection in ETP strict in Fx133. | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1931837 | |
| KB articles: | https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop | KB updated |
| “permission-request-messages-firefox-extensions” and ”extensions-private-browsing” Update | ||
|---|---|---|
| Description: | Updating the dialog screenshot for when a user installs an extension. | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1917044 | |
| KB articles: | https://support.mozilla.org/en-US/kb/permission-request-messages-firefox-extensions/history | KB updated |
| https://support.mozilla.org/en-US/kb/extensions-private-browsing/history | ||
Firefox for Android
| Desktop mode by default for Firefox for Android Tablet Users | ||
|---|---|---|
| Description: | Desktop mode browsing is now enabled by default for large devices. This can be controlled via a preference under Settings in “Site settings” previously named “Site permissions”. | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1923952 | |
| KB article: | https://support.mozilla.org/en-US/kb/getting-started-firefox-android-tablet-browser | Article updated |
Firefox for iOS
No content update on iOS
Known studies/experiments
Escalation
TBD
Known issue(s)/Trending topic(s)
| Platform | Issue | Known bug/Related discussions | Fix/workaround |
|---|---|---|---|
| Desktop ESR 128.5.0 | ESR 128.5.0 not loading pages/websites when using SSL inspection | https://bugzilla.mozilla.org/show_bug.cgi?id=1933747 | Update to 128.5.1 should fix the issue. |
| Android | - | - | - |
| iOS | - | - | - |
Known incident(s)
| Runtime exception crash in android beta | |
|---|---|
| Description: | Users experience crashes opening home screen shortcuts for private tabs, or looking at crashes in settings |
| Status: | Resolved as per #1935620 |
| Product(s) impacted: | Firefox for Android |
| Associated bug: | https://bugzilla.mozilla.org/show_bug.cgi?id=1935391 |
| Resolution/workaround: | Fixed with https://bugzilla.mozilla.org/show_bug.cgi?id=1935620 |
| Onboarding crash in Firefox iOS 133.1 | |
|---|---|
| Description: | a subset of users may be experiencing a crash loop during onboarding flow after launching Firefox iOS 133.1 |
| Status: | Resolved with 133.2 update |
| Product(s) impacted: | Firefox for iOS |
| Associated bug: | https://github.com/mozilla-mobile/firefox-ios/issues/23621 |
| Resolution/workaround: | Upgrade to v133.2 |
Post-release
- To come