Hello I would not present a problem and if this forum is the right place. If not I would support to address coorectament. I am currently developing a new system, along with the team to work. Rather use existing technologies, SQL Server 2008 R2, ADFS2.0, II7.5 AppFabric Windows 2008 R2 Visual Studio 2010, etc.. The solution divides the business through WCF services are hosted in IIS 7.5 and managed to AppFabric. The services are enabled to start automatically. Have discovery protocol (udpDyscovery) and its extreme enabled. We created a mini application to test the service discovery and the results are the following: If the run on the host, works fine, the service responds to UDP port 3702 packets. If the client does not run a station responds. We did not know if 239.255.255.250:3702 UDP packets from reaching the server. To check this, we created an application that captures the packages with the library PCAP.Net (Pcapdotnet.codeplex.com) and we run on the server. And yes, the packages arrive. But also when the application is running, the service also responds to requests for discovery (probeMatch) that makes the client station. What makes the application acting as sniffer plate is put in promiscuous mode network card. The server is virtualized with vmware 4.0 (vsphere). Can anyone find the answer to this? Thanks. Escolta Llegeix fonèticament

See this post http://social.msdn.microsoft.com/Forums/es-ES/wcf/thread/c1ae667a-5372-44f4-98f3-7cfee624957b

Hi , As you have already posted your question in appropriate forum , this forum could not do much in your issue. You need developer to look into your code.