I upgraded to Windows Live Mail 2012 to solve a problem with sync between my computer and my Outlook.com online account. After I did this I got a lot of duplicate emails. I tried a program Detect Duplicates for Windows Live Mail specifications. After trying it I uninstalled it and ran the Windows Live Mail upgrade program again. Now when I start Windows Live Mail and it checks my email accounts the following errors occur:

Unable to send or receive messages for the Outlook (my account name) account.

Server Error:0x80048820

Server: 'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'

Windows Live Mail Error ID: -0x80048820

I have no problem logging in and receiving email if I access my account through Internet Explorer.

Mike