Support/Firefox154
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Firefox 154 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
- Desktop 154.0 Release Notes
- ESR 153.1.0 Release Notes
- ESR 140.14.0 Release Notes
- ESR 115.39.0 Release Notes
- Firefox for Enterprise 154 Release Notes
- Firefox for developers 154 Release Notes
- Firefox for Android 154.0 Release Notes
- Firefox for iOS 154.0 Release Notes
Dot releases
| Platform | Version | Release date | Notable fixes | Unresolved |
|---|---|---|---|---|
| Firefox Desktop | 154.0.1 | Aug 25, 2026 | Various fixes | - |
| Firefox & Focus for Android | 154.0.1 | Aug 25, 2026 | Bug 2064507, Bug 2061846 | - |
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 154
Content in this page is being updated periodically as we're rolling out the release.
Firefox Desktop content update
| ETP update | ||
|---|---|---|
| Description: | Update enhanced-tracking-protection-firefox-desktop article | |
| Content request: | Bug 2051638 | |
| KB article: | [1] | Article update |
| Multi-Account Containers updates regarding containers general availability | ||
|---|---|---|
| Description: | Containers with the builtin capabilities are now exposed by default. This updates the management experience related to the separate add-on, where it overlaps with the settings now available universally. | |
| Content request: | Bug 2044357 | |
| KB article: | [2] | Article update |
| Startpage integration (only in France, Germany, Italy, the Netherlands, and Austria) | ||
|---|---|---|
| Description: | Adding Startpage to the list of Search providers in the article | |
| Content request: | Bug 2058724 | |
| KB article: | [3] | Article update |
Firefox for Android content update
Firefox for iOS content update
Known studies/experiments
| Platform | Studies/experiments | Description | Related discussions | Forum tag |
|---|---|---|---|---|
| Firefox desktop nightly | Tab context menu | new structure of the tab context menu | [4] | - |
| Firefox for iOS release | Ad blocker | iOS adblocker rollouts | [5][6] | - |
Product discussions on Mozilla Connect
Check out top voted requests on Mozilla Connect.
Known issues
| Platform | Issue | Known bug/Related discussions | Fix/workaround |
|---|---|---|---|
| Desktop | Windows start menu icons get recreated/overwritten | Bug 2064652 | … |
Known incidents
| Primary password being asked on startup | |
|---|---|
| Description: | After each browser launch, prompt for entering primary password opens |
| Status: | Fixed in Firefox version 154.0.1 |
| Product(s) impacted: | Firefox Desktop 154 |
| Associated bug: | Bug 2064411 |
| Resolution/workaround: | Update Firefox to the latest version |
| Address autofill is not working | |
|---|---|
| Description: | Address autofill is not offered after Fx154 update |
| Status: | Fixed in Firefox version 154.0.1 |
| Product(s) impacted: | Firefox Desktop 154 |
| Associated bug: | Bug 2065145 |
| Resolution/workaround: | Update Firefox to the latest version |
| Inactive tabs deletion | |
|---|---|
| Description: | Inactive tabs are closed when user manually selects all normal tabs for deletion |
| Status: | Fixed in Firefox for Android version 154.0.1 |
| Product(s) impacted: | Firefox for Android |
| Associated bug: | Bug 2064507 |
| Resolution/workaround: | Update Firefox for Android to the latest version |