Ошибка подключения к БД в ADO.NET

        string connectionString = @"Data Source=.\Name;Initial Catalog=Northwind;Integrated Security=True";
        var connection = new SqlConnection(connectionString);
        try
        {
            connection.Open();

            Console.WriteLine(connection.State);
        }
        catch (Exception exception)
        {
            Console.WriteLine(exception.Message);
        }
        finally
        {
            connection.Close();
            Console.WriteLine(connection.State);
        }

Получаю ошибку:

SQL Server v2014, VS 2013
В чем проблема?