Question MSSQL database connection in plesk

[sevimo]

I have tried to host my asp.net web site in asphostportal and it works perfectly with the database.

The problem is, now I want to host it in another server and i make the same steps as done in the first one, but the connection between my website and the database is not working.

The question is: Is there a problem with the configuration of the new server OR the problem is in my code? ps: I'm using plesk in the new server.