All versions of Firefox are here: https://ftp.mozilla.org/pub/firefox/releases/

''<p>george.alexandres [[#question-1468303|said]]</p>'' <blockquote>Is it possible to get a version of Firefox ESR beyond 115.15? If so, would you be so kind to share the URL to download the installation? We still have a few Windows Server 2012 boxes that are using Firefox 115.15, except Tenable is reporting the version as with vulnerabilities. </blockquote> The most current version of Firefox 115 ESR is '''115.16.1'''esr release yesterday for security updates. You also missed the 115.16.0esr update. https://www.mozilla.org/firefox/115.16.1/releasenotes/ https://www.mozilla.org/firefox/all/desktop-esr/ Note that Windows server 2012 is based on Windows 8.1. The most current Firefox you can run on Windows 7, 8, 8.1 is Firefox 115 ESR. The good news is Mozilla has extended updates support till Fx 115.21.0esr in March 2025 currently. https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support Firefox 116.0 and later including Firefox 128.3.1 ESR and Firefox 131.0.2 Release requires Windows 10/11 to run.