How do I need to set Configuration>Servers>MSSQLSERVER Settings page on this panel? I'm trying to write username and password for the database server, internal and external address fields too but when I click on update button the page is returning this error:

Service installation results:

• Could not connect to the specified SQL Server: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

I'm using multi servers. While adding the sql server machine to panel it accepted the connection and automatically saw the ms sql server on installed services. But when I tried to create a new ms sql database it gave me error. After that I checked the server settings and I tried to fill form fields as I said above. Please help me. Thanks in advance..