You cannot clear the Enable Authentication check box for a COM+ (Component Object Model) library application in Component Services on Windows Server 2003.

This behavior is the result of conflict in the data update process that occurs between the GUI and the COM+ catalog.

Microsoft had written the ChangeAuthentication.vbs script to modify the authentication property of a COM+ library application.

The syntax for using the ChangeAuthentication.vbs script is:

cscript ChangeAuthentication.vbs <ApplicationName> <on/off>


<b><ApplicationName></b> is the <b>COM+</b> library application for which you want to change the authentication property.
<b><on/off></b>          is <b>on</b> to enable authentication and <b>off</b> to disable authentication.
NOTE: If you use ChangeAuthentication.vbs to disable authentication, the user interface for the Component Services tool will still display a selected Enable Authentication check box.

ChangeAuthentication.vbs contains:

Option Explicit
Dim AppName
Dim oArgs
Dim lRet
Dim Switch
Set oArgs = WScript.Arguments
If oArgs.Length  2 Then
        WScript.Echo "usage:"
        WScript.Echo ">cscript ChangeAuthentication.vbs <applicationname><on>"
        AppName = oArgs(0)
        Switch = oArgs(1)
        lRet = EnableAuthentication(AppName, Switch)
End If

'====================================================<h4><a name="_EnableAuthentication_Param_stAppName_COM_Application_name_Param_stSwitch_on_check_Authentication_off_uncheck_">
' EnableAuthentication
' Param stAppName COM+ Application name
' Param stSwitch on - check "Authentication", off - uncheck
' </a></h4>====================================================
Function EnableAuthentication(stAppName, stSwitch)
        Dim oCatalog
        Dim oApps
        Dim oApp
        Set oCatalog = CreateObject("ComAdmin.COMAdminCatalog")
        Set oApps = oCatalog.GetCollection("Applications")
        WScript.Echo("Searching " & stAppName & "...")
        For Each oApp In oApps
                If UCase(oApp.Name) = UCase(stAppName) Then
                        WScript.Echo("Found " & stAppName & ". ")
                        Exit For
                        ' WScript.Echo("AppName " & oApp.Name & " No Match.")
                End If
        If oApp.Value("Activation")  0 Then
                WScript.Echo("AppName " & oApp.Name & " is not Library Application.")
                EnableAuthentication = -1
                Exit Function
        End If 
        If UCase(stSwitch) = UCase("on") Then
                oApp.Value("Authentication") = 0
        ElseIf UCase(stSwitch) = UCase("off") Then
                oApp.Value("Authentication") = 1
                WScript.Echo("Switch is invalid.")
                EnableAuthentication = -1
                Exit Function
        End If 
        EnableAuthentication = 0
End Function