Mozilla Firefox Esr User Use Version 52 Download ((top)) May 2026

It is the last ESR branch to support classic XUL-based extensions before the transition to WebExtensions in Firefox 57 (Quantum). System Requirements for Firefox 52 ESR

It is the final version of Firefox to support Windows XP and Windows Vista. mozilla firefox esr user use version 52 download

Before downloading, ensure your hardware matches the requirements for this specific build: It is the last ESR branch to support

Firefox 52 ESR (Extended Support Release) is unique because it bridges the gap between the modern web and legacy technologies. The primary reasons users seek it out include: and Adobe Acrobat plugins.

While standard Firefox 52 removed support for most plugins, the ESR version kept them active. This allows users to run Java, Silverlight, and Adobe Acrobat plugins.