When I try and attach files I keep getting the message "We're still getting set up. Please try again." This has been happening on and off over several days and is very frustrating as I need to send files urgently for work. I never had this problem before hotmail 'upgraded'

I am running the latest version of Firefox and have tried clearing my cookies but am still having the same problem.

Please advise as to how I can fix this. Thank you

Original Title: I can't attach files in Outlook using Firefox or Sarari on my mac.