Mozilla discontinues Firefox for 32-bit Linux
Firefox 144 will be the last for 32-bit Linux – and when Firefox ESR 140 expires next year, older systems will be completely without the browser.
(Image: David Esser/Shutterstock.com)
Mozilla will stop supporting Firefox for 32-bit Linux systems in 2026. However, most major Linux distributions for the desktop, such as Ubuntu and Fedora, no longer provide 32-bit support anyway. According to Mozilla, the maintenance of Firefox has become correspondingly difficult and unreliable. For this reason, support for 32-bit Linux will be discontinued after the release of Firefox 144 – according to the release plan on October 14, 2025. This means that Firefox 145 is expected to be released on November 11, 2025 and will no longer offer a 32-bit version for Linux.
Users who currently use Firefox on a 32-bit Linux system are encouraged by Mozilla to switch to a 64-bit operating system and install the 64-bit version of Firefox, which will continue to be supported and updated. Currently, this step mainly affects smaller Linux distributions based on Debian 12 or older. The current Debian 13 has now also discontinued support.
However, those who cannot switch immediately can continue to use Firefox ESR 140: The Extended Support Release with security updates for 32-bit Linux is still available until at least September 2026, as the announcement also emphasizes. Mozilla is comparatively late with this step: Google had already discontinued Chrome support for these i386 systems in March 2016.
(fo)
