TrustedLogin2 not working for web page

System

I have a wab page that needs to log into worksite as the current user. My server has worksite 8.5, worksite web 8.5 and Desksite 8.5. Both desksite and worksite web can successfully perform trusted logins. However, when I create a web page that runs this code:

Dim idms As New IManage.ManDMS
Dim isession As IManage.IManSession
Dim AccessToken As Integer

AccessToken = System.Security.Principal.WindowsIdentity.GetCurrent().Token.ToInt32
isession = idms.Sessions.Add("VPC1")
isession.TrustedLogin2(AccessToken)
Response.Write(isession.UserID)

It fails to login. and I get :
[NRTSession ][TrustedLogin ]Access denied (0x8004012f)

Does anyone have any ideas ?

Migrateduser

I fixed this by adding the following line to web.config