Unable to Update LDAP property "department"

[David Mujica]

I'm trying to create a utility to perform a mass update of our Active Directory and all I get is the error, "Server is unwilling to process request." Below is my code:

Dim de As New DirectoryEntry("GC://DC=us,DC=myCompany,DC=com", "myDomain\MyAdminUsername", "myPassword")

    Dim ds As New DirectorySearcher(de)
    ds.PropertiesToLoad.Add("department")
    ds.SearchScope = SearchScope.Subtree

    Dim ue As New DirectoryEntry   
    
    ds.Filter = String.Format("(SAMAccountName={0})", Me.tboxUserName.Text)

    Try
        ue = ds.FindOne.GetDirectoryEntry

        For Each sproperty As String In ue.Properties.PropertyNames
            debug.print(String.Format("{0}{1} : {2} ", System.Environment.NewLine, sproperty, ue.Properties(sproperty)(0)))
        Next

       
        ' test the update here ...

        If (ue.Properties.Contains("department")) Then
            ue.Properties("department").Value = "IT"
        Else
            ue.Properties("department").Add("IT")
        End If

        ue.CommitChanges()
        ue.RefreshCache()
        ue.Close()

    Catch ex As Exception
       
       debug.print (ex.Message)

    End Try

The code seems to connect to the LDAP server and retrieve the correct user because I can see valid data being displayed from the ue.Properties.PropertyNames collection. The error is thrown on the "CommitChanges()" line. BTW: This demo program is a WinForms .NET 4.0 applicaiton I have tried it passing no credentials and passing valid domain credentials and I get the same " ... unwilling to process request." error. What am I doing wrong?

[Bernhard Hiller]

According to http://forums.asp.net/t/1809557.aspx/1[^], the problem arises by using the wrong protocol: Dim de As New DirectoryEntry("GC://DC=us,DC=myCompany,DC=com", "myDomain\MyAdminUsername", "myPassword") replace that with Dim de As New DirectoryEntry(**@"LDAP:\\**DC=us,DC=myCompany,DC=com", "myDomain\MyAdminUsername", "myPassword")

[David Mujica]

Thank you so much. My program is now working. :thumbsup: I've been trying so many combinations that I must have overlooked the obvious.