Why would QueryInterface() fail when the interface is surely implemented and has built-in marshaller in Windows?

Question

I have the following setup. There\'s a COM server that is installed into COM+ (to run in a separate process) and has this interface definition:

[object, uuid(\"I         


        

Answer 1

you may replace IUnknown by IDispatch as parameter type of your method. In my mind, the server actually has a stub instead of the stream itself since it is in another process.

this is just a guess

I hope this helps