i keep getting the following error message when trying to access my emails - 

Unable to send or receive messages for the Hotmail ('account name') (1) account.

Server Error: 0x80072EFE
Server: 'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x80072EFE

any help would be much appreciated. 

[Original title: unable to send or receive emails]