Windows App Certification Kit error after clicking "Click here to view full report"

Question

I am getting an Unhandled exception error after running the Windows App Certification Kit and clicking on the "Click here to view full report" link. Is this a problem with my application or is the Windows App Certification Kit crashing?

The error is Class Not Registered and here are the details:

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ComponentModel.Win32Exception (0x80004005): Class not registered
   at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
   at System.Windows.Forms.LinkLabel.OnMouseUp(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Label.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Answer 1

You'll get this error if Chrome is registered as the default application associated with .htm files (I didn't see it with Firefox).

It's specifically occurring as it tries to launch the Validation.htm file with the results of WACK, so in that regard it's not your app causing the issue, and WACK is indeed complete. Validation.htm is located in the bowels of your Visual Studio solution directory, under the Release (or Debug) folder, so you can open it straight from File Explorer in whatever your default browser is.