Is your server configured to accept TCP/IP traffic? Is your server configured to allow SQL Server authentication? Is there any sort of firewall between your application and the server? Is the server running?
1. I have checked, both Server network utility and client network untility for TCP/IP port(its 1433).
2. I have turned off the wirefall.
3. Allowed exception for Port 1433(giving Name as "1433" , Port number as "1433" )
4. Now my server is not in Network , so i tried to launch the application from inside the server itself.