Google Chrome and Microsoft Edge have already dropped support for NPAPI plugins, so Mozilla is playing a bit of catch-up here.

Netscape's open source descendent will be removing NPAPI plugin support by the end of 2016. Some variants of the browser, such as 64-bit Firefox for Windows, already lack this plugin support.

As Mozilla noted, other browser makers have also ditched NPAPI plugins. Google dropped support in April with the release of Chrome 42, and Microsoft killed them with the launch of Edge in July.

Chrome 42, the latest version of the Web browser, does not support the NPAPI plugin, something that the Unity Web Player is built on. Other browsers have decided to move away from plugin support ...

Other browser makers have ditched NPAPI plugins as well; Google dropped support in April with the release of Chrome 42, and Microsoft killed them with the launch of Edge in July.

Starting in January 2015, Google's Chrome browser will block all old-school Netscape Plug-In API (NPAPI) plugins. This doesn't come as a huge surprise, ...

Chrome removed NPAPI support in September 2015, and Internet Explorer dropped it years ago; Microsoft's Edge browser includes neither NPAPI nor ActiveX plugin support.

Other browser makers have ditched NPAPI plugins as well; Google dropped support in April with the release of Chrome 42, and Microsoft killed them with the launch of Edge in July.