Microsoft could not resolve it but invited me to contact Outlook expert which I have not done as it looked far too technical and complicated. The synchronisation problem started after I had created numerous folders in order to tidy up my e-mail boxes. 150 errors mostly Send/Receive and in the end could not receive or send emails. My contacts were having their e-mails sent back to them!  I would like to create folders again in Windows Live. Can someone help me to achieve this without creating similar problems?