I haven't been able to use my email for several days, always get the same error message

Unable to send or receive messages for the Msn (j_mcdan4) account.

Server Error: 0x800488EB
Server: 'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x800488EB

Help!

Jeannine