Yes, I am trying to connect to a local SQL Express instance. Have you installed the gateway on site? No, without a gataway.
When you say that an ODBC works from the outside, can you confirm what you mean by external? Do you mean over the Internet or from another machine on your local network? Through the Internet.
My server, on which I am trying to initiate the connection, is a cloud server. Also, if from this server, I try to create a sql connection on another sql server, this is created regularly.
