Unable to send or receive messages for the Outlook (nadorvolgyi - BlackBerry) account.

Server Error: 0x801941F7
Server: 'https://m.hotmail.com/Microsoft-Server-ActiveSync'
Windows Live Mail Error ID: 0x801941F7

I am getting this error on just the one email address, I have 3 total.

This started happening about 2-3 days ago.

Why is this happening?  How can this be fixed?