Question

Ok so this problem is baffling me. I have a custom class that all my pages inherit from

Public Class Page : Inherits Page
    Private Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
        'Display Admin Controls (Buttons) '
        If User.Identity.IsAuthenticated Then
           'do some stuff '
        End If
    End Sub
End Class

But for some reason I’m getting this error:

System.NullReferenceException: Object reference not set to an instance of an object.

on this line

If User.Identity.IsAuthenticated Then

This only started happening in IIS7. I have been using this application in IIS6 for over a year without issue, and it’s only since I migrated to IIS7 yesterday that this exception started.

Answer 1

Try:

If User IsNot Nothing AndAlso 
   User.Identity IsNot Nothing AndAlso 
   User.Identity.IsAuthenticated Then
    'Do stuff
End If