Firefox ESR 128
Firefox ESR 128 has reached end of life and no longer gets security updates.
- Status
- End of life
- Released
- July 9, 2024
- Long-term support release
- Yes
- Official lifecycle page
- whattrainisitnow.com
- Checked on
Firefox ESR 128 has reached end of life and no longer gets security updates. Mozilla released it on July 9, 2024. The last ESR 128 release, 128.15, shipped on September 16, 2025.
- Product
- Firefox ESR
- Version
- 128
- Sources
Page URL Mozilla release calendar https://whattrainisitnow.com/calendar/
Questions
When did Firefox ESR 128 reach end of life?
Firefox ESR 128 no longer gets security updates. The last ESR 128 release, 128.15, shipped on September 16, 2025.
Is Firefox ESR 128 still supported?
No. Firefox ESR 128 no longer gets security updates.
When was Firefox ESR 128 released?
Firefox ESR 128 was released on July 9, 2024.
Where do the Firefox ESR 128 dates come from?
From the vendor’s official pages (Mozilla release calendar), checked on September 29, 2026.
Sources
Every date comes from the vendor’s official lifecycle or release page: Microsoft Lifecycle and Windows release health, Ubuntu’s release cycle, Debian releases, the Python developer guide, the Node.js release schedule, php.net, Oracle’s Java SE support roadmap and Lifetime Support Policy, the .NET support policy, PostgreSQL versioning, Mozilla’s release calendar and Google’s Pixel update policy. Each record links its sources and shows the date they were checked.