How long has this error been happening?
quote:
Originally posted by https://account.live.com/helpcentral.aspx
Error 81000314, 81000377 or 81000378: Your contact list is not available
If you receive one of these messages, your contact list is not available or is in read-only mode. The Windows Live Messenger service may be experiencing technical difficulties. Wait a few minutes, and then try to sign in again.