Server was not found or was not accessible or network related or instance specific error SQL Server
I got the following error while trying to connect 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"