For SDK 6.1, it has a test app which is called SDKTestPlus3.exe.
I would like to use it. However when I run it which shows a dialog:

I suppose this file was provided by Microsoft, and it is gone.
Where should I get it correctly. There are many sites provide it. However, most of them are not reliable for me.
Anyways, the goal is running this app, if I have other option, could you tell me instead of running this app.
Thanks