Have you got any solution for this problem from that time?
I am having exactly the same problem !!!
I appreciate your help much.




> I have a Win2K server with IIS and CDO 1.21 installed (from Outlook 
2000) 
> on one box.  On another Win2K server is Exchange 2000 (no Outlook 
> installed).  I have an asp application that logs into the Exchange box 
> just fine the first time in the global.asa file:
> 
> Sub Session_OnStart
>     Dim objSession
>     Dim strProfileInfo
>     Dim oInbox
>     
>     strProfileInfo = "test"& vbLf & "iis_user"
>     Set objSession = Server.CreateObject("MAPI.Session")
>     objSession.Logon "", "", False, False, 0, False, strProfileInfo
>     Set oInbox = objSession.GetDefaultFolder(1)
>     If err.number <> 0 then
>         objSession.Logoff
>         Response.write("unsuccessful logon!")
>     Else
>         Set Session("MapiSession") = objSession    
>     End If
>     Set oInbox = Nothing
>     Set objSession = Nothing
>     Set strProfileInfo = Nothing
> End Sub
> 
> The problem is that once the session times out (~20 minutes right now), 
> and it tries to create a new session, I get the following error:
> 
> Error Type:
> Collaboration Data Objects (0x43F)
> [Collaboration Data Objects - [E_INVALIDARG(80070057)]]
> //global.asa, line 21
> 
> Thereafter, no one can view the web page.  
> 
> Any ideas why?  Thanks in advance.
> 
> -Steve
>