ESR 140 reaches end of life in October 2026; ESR 115 extended on legacy systems to March 2027
Catalog row in Vendor License Rules · Cited
- Kind
- Lifecycle
- Statement
- Firefox ESR schedule (as published on 2026-09-27): current ESR branches are 140 and 153; 140.17 on 2026-09-29 is the last scheduled ESR 140 release, and on 2026-10-13 ESR 140 is end of life with installations updated to ESR 153. Support for ESR 115 is extended only on Windows 7-8.1 and macOS 10.12-10.14 up to March 2027.
- Applies when
- Tracking end of life of Firefox ESR versions in a software inventory.
- Applies to
- Firefox ESR 140, ESR 153 and ESR 115 installations.