Hotmail suddenly not synchronising with Windows Live Mail? Try this:

1) Open Live Mail.
2) Delete the existing account.
3) Add new account, and check the “manually configure” option.
4) Set the connection settings to:
Incoming server name: pop3.live.com
Incoming server port: 995
Outgoing server name: smtp.live.com
Outgoing server port: 25
Requires SSL Yes
Requires outgoing authentication Yes