=================================== Cannot connect to s03.Winhost.com. =================================== A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: TCP Provider, error: 0 - The specified network name is no longer available.) (.Net SqlClient Data Provider) Why? Yesterday it was working fine.
Are you seeing this error on your computer. If you are run a traceroute and telnet test to the SQL server. tracert s03.Winhost.comand... telnet s03.Winhost.com 1433
If you see the error again perform the tests I typed out. It does sound like a network disruption occurred between you and our server. The tests will help pin point where the disruption is occurring.