Support/Firefox136
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Firefox 136 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 136.0 Release Notes
- ESR 115.21.0 Release Notes
- ESR 128.8.0 Release Notes
- Firefox for Enterprise 136 Release Notes
- Firefox for developers 136 Release Notes
- Firefox for Android 136.0 Release Notes
- Firefox for iOS 136.0 Release Notes
Bug boards
Dot releases
| Platform | Version | Release date | Notable fixes | Unresolved |
|---|---|---|---|---|
| Firefox Desktop | 136.0.1 | Mar 11, 2025 | A fix for a webcompat issue that may affect multiple sites bug1950565, bug1947723 | bug1952564 |
| Firefox & Focus for Android | 136.0.1 | Mar 11, 2025 | bug1950565 | - |
| Firefox Desktop | 136.0.2 | Mar 18, 2025 | Disabled support for the CookieStore API due to compatibility concerns (will be enabled later once the issues have been addressed). Bug1952564, Bug1946121, Bug1951930, Bug1924932 | - |
| Firefox & Focus for Android | 136.0.2 | Mar 18, 2025 | - | - |
| Firefox Desktop | 136.0.3 | Mar 25, 2025 | TikTok Nearly Unusable on Firefox 136+ bug1954323 | - |
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!
- Firefox News: Consider subscribing to Firefox Daily Digest to get daily updates (Mon-Fri) about Firefox from across the internet.
- Community Newsletter: Consider subscribing to the Mozilla Community Newsletter to get monthly update about our community.
Content in this page is being updated periodically as we're rolling out the release.
What's new in Firefox 136
Firefox Desktop
| Sidebar update for the 136 release | ||
|---|---|---|
| Description: | Sidebar update for the 136 release | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1948430 | |
| KB articles: | https://support.mozilla.org/en-US/kb/use-sidebar-access-tools-and-vertical-tabs | New article |
| https://support.mozilla.org/en-US/kb/use-firefox-sidebar-access-bookmarks-history-synced | KB updated | |
| Crash reports in Firefox desktop (ToU update) | ||
|---|---|---|
| Description: | Firefox crash report article for desktop | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1931078 | |
| KB articles: | https://support.mozilla.org/kb/crash-reports-pref | New article |
| Marketing data (ToU update) | ||
|---|---|---|
| Description: | New article about how to manage marketing data in Fx desktop | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1933833 | |
| KB articles: | https://support.mozilla.org/kb/marketing-data | New article |
| Technical and interaction data (ToU update) | ||
|---|---|---|
| Description: | SUMO article for technical and interaction data setting | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1931075 | |
| KB articles: | https://support.mozilla.org/kb/technical-and-interaction-data | New article |
| DAU ping (ToU update) | ||
|---|---|---|
| Description: | SUMO article for managing DAU Ping | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1925054 | |
| KB articles: | https://support.mozilla.org/kb/usage-ping-settings | New article |
| Explanation for the OHTTP feature (ToU update) | ||
|---|---|---|
| Description: | SUMO article for the OHTTP feature | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1946031 | |
| KB articles: | https://support.mozilla.org/kb/ohttp-explained | New article |
Firefox for Android and iOS
| Technical and Interaction Data Setting on mobile (ToU update) | ||
|---|---|---|
| Description: | SUMO Article for Technical and Interaction Data Setting on mobile (ToU update) | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1931077 | |
| KB articles: | https://support.mozilla.org/kb/technical-and-interaction-data | New article |
| DAU ping for iOS (ToU update) | ||
|---|---|---|
| Description: | SUMO article for managing DAU Ping on iOS | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1925053 | |
| KB articles: | https://support.mozilla.org/kb/usage-ping-settings | New article |
| SUMO article for Adjust and SKAdNetwork marketing data (ToU update) | ||
|---|---|---|
| Description: | SUMO article for Adjust and SKAdNetwork marketing data on mobile products | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1917415 | |
| KB articles: | https://support.mozilla.org/kb/mobile-marketing-data | New article |
Firefox Focus for Android & iOS
| DAU ping for Focus iOS (ToU update) | ||
|---|---|---|
| Description: | SUMO article for managing DAU Ping on Focus iOS | |
| Content request: | https://bugzilla.mozilla.org/show_bug.cgi?id=1937183 | |
| KB articles: | https://support.mozilla.org/en-US/kb/manage-daily-usage-ping-data-collection-settings-f | New article |
Known studies/experiments
Escalation
TBD
Known issue(s)/Trending topic(s)
Known incident(s)
| CookieStore API issue that cause login and other state-related issues | |
|---|---|
| Description: | Websites that use CookieStore cookies with name+value lengths > 1024 will fail. This could cause login and other state-related issues. |
| Status: | Fixed in 136.0.1 |
| Product(s) impacted: | Firefox Desktop/Android/iOS |
| Associated bug: | bug1950565, bug1952771, bug1952489 |
| Resolution/workaround: | Upgrade to 136.0.1 |
| New update checked "Cookies and site data" automatically for some users | |
|---|---|
| Description: | Users clearing "History" and/or "Site settings" on shutdown on previous versions will also have clearing "Cookies and site data" and "Temporary cached files and pages" enabled after updating to Fx136 even if they previously haven't checked these settings. |
| Status: | Ongoing (a patch with fix is ready to be shipped) |
| Product(s) impacted: | Firefox Desktop |
| Associated bug: | bug1952564 |
| Resolution/workaround: | Affected users can go to "Privacy & Security" settings directly after the upgrade and uncheck both boxes to avoid getting logged out. |
| History Disappears for users in Firefox for iOS | |
|---|---|
| Description: | Certain history disappears from the user’s history & search suggest. However, it seems like the data is not lost, but it’s just actually not visible. |
| Status: | Ongoing (fixes are ready) |
| Product(s) impacted: | Firefox for iOS |
| Associated bug: | #25161, #25257 |
| Resolution/workaround: | A fix is coming up with the release of version 136.2 on iOS |
Post-release
- TBD