[DBNETLIB][ConnectionOpen (Invalid Instance()).]Invalid connection Error when binding MSSQL database with plesk 10

Connection to a named instance of SQL server 2005/2008 should be made using the format
‘VirtualServer\Instancename’. if the IP address of a machine running a named SQL server instance
(ONE)is 192.141.128.140, you can connect to the named instance using  192.141.128.140\ONE for the servername.

To avoid a client app from using the above convention for a servername, a client  alias can be created using the client network utility. Client network utility  can be initiated by   Read more...