I am developing a program in VS.2010 combining visual basic project with a DLL from c #. the problem is that my PC works fine but when I run it on another pc I get the following error. 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 gave change the server name in the connection string for the name of the machine on which I want to run it. however always happens the same error. verique and sql and all services are running well
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