Sorry I can't work out how to do the above after a few minutes of trying.My windows 7 machine has been taken over by malware and prevents the download.I think the malware originated from a website pretending to be mozilla.org which I accidentally clicked on.Reinstalling windows has not fixed the problem.i guess they have a robot installing malware to my ip address or something.The offending website is the one that pops up as the number one advertised website when you search for "mozilla firefox" on bing.The website does not appear on google on my Linux machine.Perhaps the malware is introducing the fake website into my search results.I don't know ,I am not an expert.