Error 3204

I am getting the following error:

Unable to send or receive messages for the Outlook (XXXXX.com) Account.

Server Error:  3204

Server:  'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID:  0x8DE20003


Why is this happening?
I have been using Window Live Email since May 2013 with no problems whatsoever, now this is happening!

I cannot get my email from my Outlook account.

I have tried removing the Outlook account and  the same thing happening.

Please fix.