For Official Build

If you use a Firefox 64-bit official build:

  1. Need support? please explore ""
  2. Report a bug? please go to ""

For Unofficial Build

If you use the Firefox 64-bit unofficial build, please contact its author.


If, for any other reasons, email at 64bit (at) firefox64bit (dot) com, piece together the useful parts of the text to recreate the email address, please be short and use keyword "firefox" in subject.