Connection string failing for SQL server 2012

Question

I'm trying to connect to my db on my local machine with the following connection string and it fails for the following connection string

conn = new SqlConnection("Server=(local);DataBase=dnn6;Integrated Security=SSPI");

I'm using IIS 6 as my web server and when I open that page I get the following error.

Cannot open database "dnn6" requested by the login. The login failed.
Login failed for user 'IIS APPPOOL\demo'.

I'm using SQL Server 2012

Answer 1

The problem is that the IIS account being used to access SQL Server (IIS APPPOOL\demo) does not have access to it.

You need to either:

• grant permission for the user IIS APPPOOL\demo to your SQL Server
• use impersonation to connect to SQL Server with a user account that has access
• use SQL Server Logins to access SQL Server using a named user (not recommended these days)