Stop displaying "Unsupported .vdproj" warning
You can install a Microsoft extension that enables .vdproj installer projects in VS 2013.
For Visual Studio 2019 (possibly 2017) you need to add the installer extension.
In Visual Studio:
- Select the menu item "Extensions"
- Select "Manage Extensions"
- In the left-hand pane, select "Online"
- In the search box, search for "Microsoft Visual Studio Installer Projects"
- Install
- Load your project
@krill-a's answer regarding VS 2013 is spot-on.
Since the same problem occurs in VS 2015, note that Microsoft has released an updated extension to solve the problem in it.
Like the VS 2013 installer-projects extension, you can download the updated installer-projects extension from the Visual Studio Gallery to add support for .vdproj projects in VS 2015.