- Select the web or WCF project. Press F4 to show the property window. If only an empty window appears, repeat the process.
- Set the first property to "False".
If your solution contain projects that start the ASP.NET Development Server you will enjoy my macro that sets this property solution wide:
Update: This solution no longer works for VS2012. An addin with the same functionality is available on GitHub: https://github.com/algra/VSTools