Hi Prasad,

does your SL application calls a WCF service or an asmx one?

If it consumes WCF, please control the <endpoint> section of the web.config configuration file, it should contain something like this (the address option should be set to ""):

<endpoint address="" binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IService1" contract="Service1ns.IService1" name="BasicHttpBinding_IService1" />

Also verify that crossdomain.xml/clientaccesspolicy.xml are in the right place (c:\inetpub\wwwroot - but they should be already there, the app correctly runs, right?).