Firefox Windows Xp Professional Apr 2026

End-of-Life. No security patches or feature updates have been issued since 2018.

If you must use Firefox on XP Professional, follow these steps to install the final compatible version: Firefox Windows Xp Professional

Firefox 52.9.0 ESR (released June 2018). End-of-Life

As of March 14, 2025, an expired root certificate has caused widespread functionality loss, making many modern websites inaccessible without manual certificate updates. 🛠️ Installation Guide for Windows XP as of April 2026

For users of , Firefox is historically significant as the last major browser to maintain any form of support. However, as of April 2026 , Firefox on XP is considered legacy software with severe limitations. ⚡ Quick Reference: Firefox on XP