Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=4.0.0.0

Question

I have a WPF web app and I\"m trying to access a SQL 2000 database, but I\'m getting the following error:

Request for the permission of type \'System.

Answer 1

Your application lacks the necessary permissions to connect to the SQL database. Try running it as an administrator (it may be easiest to simply launch Visual Studio as admin).

Answer 2

Try switching to full trust application.

Answer 3

Full trust + Enable ClickOnce Security Settings make code conect server again.

Curious this PublicKeyToken=b77a5c561934e089', I thoug was the signing my applications, seems MS uses for a generic security setting