As software developers, we are always developing applications that can communication with other components: A server side script that echoes html to the browser, the client application that send information to a remote server endpoint and etc. One of the requirements that I got from my project was to display feedback from a windows service. However, because of session 0 isolation in windows 7, invocations of visual display logic from the windows service application is not enough to fulfill the requirement. In order to display feedback from a windows service application, I created a separate form application that runs when users log in and have the form application connects to the windows service application via TCP/IP to listen for feedback. Communication between the two applications is achieved via Object Serialization in .NET framework.