On every occasion I open windows live mail I get an error notice which reads :-  "Unable to Send and Receive Messages

                                                                                                                                   Server error  4102

                                                                                                                            Service ; http://mail.services.live.com

                                                                                                                                      DeltaSync_v2.0.0/sync.aspx

                                                                                                                                 Windows Live Mail error 0x8DE00001

   I am able to send email but not able to receive.  How can I cure this problem?