Allow Silverlight applications to use UDP multicast

By default, a Silverlight application may use UDP multicast networking APIs. If this policy is disabled, the application can't directly use multicast.

This setting does not affect the Silverlight MediaElement, which can use multicast if the media server and network support it. Unlike the UDP multicast API, the MediaElement doesn't allow the application to see the multicast data that's being sent and received.

Supported on: At least Microsoft Windows 2000 Service Pack 4, Microsoft Windows XP Service Pack 2 or Microsoft Windows Server 2003 family
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Microsoft\Silverlight
Value NameAllowUdpMulticastClientApi
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

silverlight.admx