Firefox ESR v115.x Support for Win 7 and 8.1 Extended to August 2026

Martin Brinkmann’s 11-Mar-2026 Chipp.in Tech News article Mozilla changes plans, extends Firefox support on Windows 7 and 8 once more is reporting that Firefox ESR v115.x support has been extended (again) for Win 7 and Win 8.x users until August 2026.

The official Firefox ESR release calendar now shows that future Firefox ESR v115.x releases are currently scheduled to continue up to Firefox ESR v115.39.0 (due 18-Aug-2026) and states:

We have decided to extend support to ESR 115 only on Windows 7-8.1 and macOS 10.12-10.14 up to August 2026. We will re-evaluate this decision in July 2026 and announce any updates on ESR 115’s end-of-life then.”


Dell Inspiron 15 5584 * 64-bit Win 10 Pro v22H2 build 19045.6937 * Firefox v148.0.2 * Microsoft Defender v4.18.26010.5-1.1.26010.1 * Malwarebytes Standard v5.5.1.240-151.0.5515 * Macrium Reflect Free v8.0.7783