Version 52.x was the last release to support "Legacy" extensions before Mozilla switched to the WebExtensions API in Firefox 57 (Quantum).
Introduced in Private Browsing and one-click audio muting on tabs. Firefox 45.0
Firefox 52.0.x was the last to support NPAPI plugins like Java and Silverlight , which are required for some older enterprise applications.
Added "Synced Tabs" and the ability to share a tab through Hello.
Version 52.x was the last release to support "Legacy" extensions before Mozilla switched to the WebExtensions API in Firefox 57 (Quantum).
Introduced in Private Browsing and one-click audio muting on tabs. Firefox 45.0 firefox 42.0.x-52.0.x download
Firefox 52.0.x was the last to support NPAPI plugins like Java and Silverlight , which are required for some older enterprise applications. Version 52
Added "Synced Tabs" and the ability to share a tab through Hello. firefox 42.0.x-52.0.x download