I have recently encountered the strange problem of MSN login, and I have no use of N-fold MSN. Log in to Hotmail seems to have the same problem, and finally I found that IE security settings. Now solved, if you have similar problems, I hope this blog will help you. My system is Windows Server 2003, IE6.0SP1, the default IE setting automatically checks if the server's certificate is valid, this is the culprit. The solution is as follows: Open the tool in IE -> Options -> Advanced, check the "Check the server certificate revocation status (need to restart)", and restart the machine. I don't know if this is a bug or MS my own MSN server certificate has expired? BTW, if you use the MSN Messenger 7.0 Beta, you should see this error when logging in normally: 80072f19
