
It is not clear right now if the organization manages to add support of Silverlight in Firefox 43, to be released on December 15, 2015, or Firefox 44, which will be released on January 26, 2016. Mozilla plans to integrate support for Silverlight in 64-bit versions of Firefox in Firefox 43 or 44. The reason given is that streaming services such as Amazon or Netflix, as well as several local streaming providers such as Eurosport, Videoload, Sky Go or Magine TV use Silverlight exclusively or optionally.

This is going to change soon however as Mozilla plans to add Microsoft Silverlight to the browser's whitelist.

One core difference between the 32-bit and 64-bit version of Firefox for Windows lies in plugin support.įirefox 32-bit users can install plugins like Java, Silverlight or Adobe Flash and they will get picked up by Firefox automatically.Ħ4-bit versions of Firefox on the other hand accept only Adobe Flash and no other plugins even if 64-bit versions of plugins are available.

Since it is the first official stable release, it is likely that Mozilla wanted to monitor bugs and other issues for a release cycle. Firefox users can download the 64-bit version from Mozilla's Download Archive though.
