ASP.net Login failed. The login is from an untrusted domain

Hi

I am using the code below to load a GridView. My SQL database is on a server in South Africa and the web app is in Azure. I get the following error
Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. dr2

The published web page is office2web.azurewebsites.net/contact
The strange thing is that another azure web app of mine works just fine with a database on the server so it must be something to do with the web app. The web app is http://steelyard.azurewebsites.net/

Imports System.Data.SqlClient
Public Class Contact
    Inherits Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load

        If Not IsPostBack Then
            Call Bind_Grid_to_Dataview(Me.GridView1, "Select * From Customers")
        End If

    End Sub

    Sub Bind_Grid_to_Dataview(ByVal oGridView As GridView, ByVal oSQL As String)
        Try


            Dim cs As String = ConfigurationManager.ConnectionStrings("PSQL").ConnectionString
            Dim objCon As New SqlConnection 'Declaring connection object
            objCon.ConnectionString = cs
            'opening connection
            If objCon.State = ConnectionState.Closed Then
                objCon.Open()
            End If
            'declaring new Data Adapter
            Dim objDA As New SqlDataAdapter
            objDA.SelectCommand = New SqlCommand(oSQL, objCon)
            Dim objDS As New DataSet
            objDA.Fill(objDS)
            'Call oCheck_DataSet_For_Blank_Columns(objDS)
            'Below i am creating a default view of the Data Set
            Dim objDV As DataView = objDS.Tables(0).DefaultView
            Session("objDV") = objDV
            oGridView.DataSource = objDV
            oGridView.DataBind()

        Catch ex As Exception
            Response.Write(ex.Message & " dr2")
        End Try
    End Sub
End Class

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