64-bit Firefox is available in the Beta channel. It may "soft launch" in Firefox 40, but some features are still incomplete (like NPAPI plugin support). https:

64-bit Firefox is available in the Beta channel. It may "soft launch" in Firefox 40, but some features are still incomplete (like NPAPI plugin support). https://wiki.mozilla.org/Firefox/win64 https://wiki.mozilla.org/Firefox/win64