I can no longer download attachments from my Hotmail account, when using Firefox 24.0. I have never had a problem for the last 15 years until now. This has been going on for a few weeks.

When I click on an attachment, either to 'Download' or to 'Download All As Zip', nothing happens. I get no error message, no attempted download, no option windows. Outlook gives no impression that it is trying to do anything.  

I now have to use Internet Explorer to download attachments, which I do not want to do. I would be grateful for any advice so that I can download my attachments again.