I have a connection string that is allowing me to return a data set from a SQL Server. Here is my connection string:

"Data Source=SERVER101;Integrated Security=SSPI;Initial Catalog=HPLX3;User ID=dnbftpsvc;Password=dbflatftp"
That user is correctly set up on the server, yet when I run the application, I get an exception stating that the login failed for "user (NULL)."

Any advice?