Version - Download Mozilla Firefox For Windows Xp Professional Latest

: Pentium 4 or newer with SSE2 support . If your CPU does not support SSE2, the last working version is Firefox 48.0.2. RAM : At least 512 MB (1 GB recommended). Current Limitations

While it is the "latest" for your OS, it is no longer supported with security updates and faces significant compatibility issues on the modern web due to expired security certificates as of March 2025. : Pentium 4 or newer with SSE2 support

: You can find this specific legacy version on the Mozilla FTP Archive or through the Internet Archive . System Requirements : Pentium 4 or newer with SSE2 support