The latest version of Mozilla Firefox that supports Windows XP Professional (including 64-bit editions) is , released on June 26, 2018.
: 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 The latest version of Mozilla Firefox that supports
: You can find this specific legacy version on the Mozilla FTP Archive or through the Internet Archive . System Requirements released on June 26
