I have used Windows Live Mail Desktop beta for almost one year without any serious problems. Synchronizing with Hotmail stopped working recently and gave me this error:
Unable to poll for new messages on your HTTP server. There is an error synchronizing your mail account. Please verify your account has been configured correctly by first accessing your mail on the web. Server: 'http://mail.services.live.com/DeltaSync_v1.0.0/sync.aspx', Protocol: HTTPMail, Server Response: 'Client is requesting a deprecated version of the service. User should upgrade to the newest version of the client', Port: 80, Secure(SSL): No, Server Error: 4109, Error Number: 0x8DE00002
The problem ...