UDP traffic from Windows Server 2003 to 239.255.255.250

Hi There,

Our Juniper firewall is catching UDP traffic coming from MS Windows Server 2003 and going to 239.255.255.250 on port 1900. I have managed to find that port 1900 is used by SSDP service. But how do I stop it sending traffic?

There is no guide for Windows Server 2003.

Please help.

Cheers !