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Event ID: 20157 Source: IPRouterManager

Level
Description
The interface {Interface Global Unique Identifier (GUID)} could not be enabled for multicast. IGMP will not be activated over this interface.
Comments
 
If your computer uses a network adapter that does not have the ability to see all the network packets (promiscuous mode), not just the packets destined for it, you will experience this problem, as the adapter cannot listen to multicast traffic. See "JSI Tip 7419" to solve this problem.

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