Prevent it from spawning a page automatically, although you can still Wait for a request from an external application.' This will There, go to the 'Web' tab, and change the Start Action to 'Don't openĪ page.
Right click on the project file in question, and open 'Properties'. This is possible, and is done a different way depending on whether the application is set up as a 'Web Site Project' or a 'Web Application Project' in Visual Studio 2010.