I signed in to the website but could not find a "Private Message " to send an email as per the instruction. So I have the same question: How to fix :

Server Error: 4102

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

Windows Live Mail Error ID: 0x8DE00001

As I cannot send or receive mail from Windows Live Mail. I have Windows 7 Professional Service Pack 1 and I'm using Live Mail.