
sorry!! having too many tests and so left a muddled post. Not the VIA, need to enable the SQL Server Browser service.
see SQL Server Configuration Manager Help:
"The SQL Server Browser program runs as a Windows service. SQL Server Browser listens for incoming requests for Microsoft SQL Server resources and provides information about SQL Server instances installed on the computer. SQL Server Browser contributes to the following actions:
Browsing a list of available servers
Connecting to the correct server instance
Connecting to dedicated administrator connection (DAC) endpoints