Whiteboard and application sharing do not work

[Dave Ogle]

Perhaps you can help

I am using MSN Messenger V6.2

(Windows Messenger is also installed)



Whiteboard and application sharing do not work

Sound, video and file transfer work OK



Looking in Tools/Options/Connection I have the following message:

You are connected to the Internet through a non-UPnP symmetric NAT
(Administrator)



I am connected with a D-Link DSL-504T ADSL router with the following setup

UPnP enabled

Firewall & NAT enabled

DMZ not enabled

Port forwarding

TCP,UDP 1024-1064,1863,6901

TCP 1503,1720,1731,522,389,1503,5190,6891-6900



I am running Windows XP with SP2



Regards

Dave Ogle

 

[Jonathan Kay [MVP]]

Greetings Dave,

The RTC (Real-Time Communications) component which powers the audio conversations of MSN
Messenger can actually establish a connection even without an UPnP (detected anyway) NAT, the
Webcam functionality can do the same (and use a relay server) and file transfer can send
files directly through the server.

However, Whiteboard and Application Sharing do require an UPnP-enabled NAT (even with the
proper port forwarded; 1503) as it needs to send the proper IP information to your contact
(and has nothing to fall back on).

You might try installing the UPnP components in Windows -- click Start, Control Panel, Add or
Remove Programs, Add/Remove Windows Components, and under Networking Services, make sure that
Internet Gateway Device Discovery and Control Client as well as UPnP is installed.
____________________________________________
Jonathan Kay
Microsoft MVP - Windows Messenger/MSN Messenger
Associate Expert
http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com
All posts unless otherwise specified are (c) 2004 Jonathan Kay.
You *must* contact me for redistribution rights.

 

[Dave Ogle]

Jonathan
Thanks for your quick response to my query
I have done as you suggested, but both UPnP and Internet Gateway Discovery
and Control Client are already installed
It does seem from the message in MSN Messsenger tools/options/connection
that Windows is not recognising my router as UPnP enabled.
Dou you have any other suggestions?
Regards
Dave