I have just submitted Bug report # 132999, after being logged out of Outlook every time I closed it, a situation which started yesterday after a routine deletion of cookies and site data. Please would you delete this bug report as I have found the reason why I was having the problem. The reason is that without realising it I had ticked the box to "Delete cookies and site data when Firefox is closed" I have now unticked that box and the problem has gone. So please accept my apology for any time wasted because of this bug report. Many thanks, and keep up the good work, Steve Evans.