named system mutex not recognized

Question

I am trying named system mutex approach to synchronize two processes-

1. a c# windows service
2. a desktop c# app

When the mutex is created,

Answer 1

Since you want to share a mutex across sessions you must use either the Global namespace, or create your own private namespace.

As it stands, you are not specifying a namespace. And whilst the service defaults to use the global namespace, your interactive application will be using the local namespace.