Suddenly I am unable to reply to or compose new emails in Outlook.com. I use Firefox 38.0.5 The newest version. Yesterday everything was fine, today not. I can read them, but cannot reply or compose new. I run Win 7 Pro 64bit on an Asus G750 laptop. I have not changed anything between yesterday and today. Starting Firefox in Safe Mode (Add-ons disabled) did not work There is no issue using Chrome (which I don't like). Any suggestions are appreciated.