I recently (yesterday) lost the ability to send and receive mail within Live Mail. Error Message:

Unable to send or receive messages for the MSN account.

Server Error: 0x800488EB
Server: 'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x800488EB

I tried the fixes offered by Mary V., but to no avail. I'm at a loss as to why Live Mail stopped working, as no changes were made to system prior to failure. I have switched to Outlook for now.

Mike