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Among mainstream software, support for 32-bit operating systems has become increasingly rare. Yet the Mozilla Foundation has, until now, continued to maintain compatibility with 32-bit Linux, providing ongoing updates to Firefox for Linux-32 to patch security vulnerabilities.
The Foundation’s rationale has been rooted in its commitment to serving Firefox users and in its desire to ensure the browser remains as widely accessible as possible. At the same time, continued support has offered a practical benefit: extending the lifespan of older hardware and reducing unnecessary electronic waste—a subtle jab at Microsoft’s tendency to accelerate hardware obsolescence.
Nevertheless, with most modern Linux distributions having abandoned broad support for 32-bit systems, maintaining Firefox for Linux-32 has become increasingly difficult and unreliable, demanding ever greater manpower and resources.
As a result, the Mozilla Foundation has announced that beginning with Mozilla Firefox version 145.0, support for 32-bit Linux will officially end. Versions 144 and earlier will remain available for download in 32-bit builds, but no further updates will be released.
The Foundation strongly urges users still reliant on 32-bit Linux to migrate to a 64-bit system and install the 64-bit edition of Firefox, which will continue to receive regular feature updates, bug fixes, and crucial security patches.
Firefox version 145.0 is scheduled for release in September 2026. After that date, 32-bit Linux users will no longer receive updates. While older versions of Firefox may still function, they will do so without adequate security safeguards.
Related Posts:
- Fedora Linux Delays 32-bit Support End: Community Backlash Saves Gaming & Legacy Hardware
- LibreOffice 25.8 Beta 2 Drops Support for Windows 7/8/8.1 and All 32-bit Systems
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