Fix Windows Live Mail beta 0x8DE00002 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 was, for once, pretty clear from the error message: Client is requesting a deprecated version of the service. User should upgrade to the newest version of the client I tried many times but Windows Update did not find a new version.
It turns out it is a "feature" unless your regional settings is set to EN-US. You can try to modify your settings or download the latest client (V12.0.1184) here which fixes the problem
Warning: Windows Live Mail will move your mail to your documents folder even if you, like me, have it stored somewhere else. It took well over half an hour to start the first time as it imported all my old mails but after that it works pretty fast.
Warning 2: This version has problems with some POP3 mail providers. It works OK with the providers I use but YMMV.