TIdIPMCastClient problem

[rlebeau]

The fact that you have the same problem with C# means this is not an Indy issue. Either you are doing something fundamentally wrong in your handling of multicast, or your environment is just not setup correctly. Either way, you still haven't provided specific details to help you diagnose this. Again, what does your code look like? What does your NIC setup look like? What does the Wireshark capture look like? Details matter.