SQL Connection Error

Hello,

When I host my web application on server an error occurred:

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)

But its working completely fine on local host. Does any one have any idea what to do? I already search on the google followed the steps but still its not running.

Thanks in advance

Ritul Patel