OT: windows live mail 2011 calender service.

When I open Windows Live Mail 2011. In the bottom right hand corner ' checking mail ' appears, followed by ' updating calender '. At this point the error appears. ' There was an error when attempting to connect to the Windows Live Calender Service '. The error persists and so far I have put up with it. Now I

need to do something about it once and for all. My laptop has Windows Vista Home Premium , Service Pack 2 , 32 - bit .  Thank you.

Nicholas C Barnard