Suddenly Windows Live Mail received empty emails with error msg that imap server won’t connect

All of a sudden Windows Live Mail had trouble downloading email from the account servers. All I get are empty envelope icons and an error message saying that Windows Live Mail could not connect to the MSN imap server. I have 3 accounts: My earthlink email/webmail (which works fine), my MSN account which suddenly won't connect with the server, and my Outlook account which also won't deliver. But I also have MAIL and it seems to be working fine. Before, they both worked fine together. Has anyone also been hit by this latest Microsoft phenomenon? Harry Carry