Download Verified Firefox 12-51 52 Esr [2025]

Using these versions for daily web browsing is . They do not receive modern security patches and are vulnerable to exploits.

: This is the final version that supports Windows XP and Windows Vista. You can find it in the /52.9.0esr/ directory. Download Firefox 12-51 52 Esr

: Using outdated browsers like Firefox 52 ESR poses significant security risks as they no longer receive security patches. It is recommended to use these versions only for specific legacy tasks in a restricted environment. Portable Alternatives Using these versions for daily web browsing is

Firefox ESR release cycle | Firefox for Enterprise Help - Mozilla Support You can find it in the /52

For Firefox 52 ESR, which was released in April 2017 and supported until August 2018, users can still find it through the following methods:

: All historical versions are stored in the Mozilla FTP Directory .