Unable to send or receive messages for the MickRobertsHotmail account.

Server Error: 4102
Server: 'http://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x8DE00001

I've been on holiday, put live mail on netbook, all fine for a few days, then the above error. I'm now back off holiday on big laptop in office, getting the same error, so presume just a coincidence as worked fine for a few days & is doing it on office computer.

I could send emails, but it's not receiving.

Nor is it updating my new emails received & sent from the holiday netbook.