SQL Server 2005 Express Connection Error?

Mar 11, 2010

am working on a project and am using sql server 2005 express as my database server, the problem is i can;t connect to the sql server from any machine on my local network (windows).

Below is my connection string

con.ConnectionString = "Data Source=webserver1SQLEXPRESS;AttachDbFilename='C:POSM_DB.mdf';Integrated Security=True;Connect Timeout=30;User Instance=True;"

It works all right on the development machine but not on network, i think it has something to do with the network.

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[Code]...

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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: TCP Provider, error: 0 - No connection could be made because the target machine actively refused it.)

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[Code]...

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