"Tutorial: Build and deploy an unpackaged app that uses the Windows App SDK" does not work

[pjc50]

Follow instructions at https://github.com/MicrosoftDocs/windows-uwp/blob/docs/hub/apps/windows-app-sdk/tutorial-unpackaged-deployment.md for preview3, including installing the runtime as administrator from https://download.microsoft.com/download/9/4/5/9457d37a-81d5-4ced-abd4-f31af75c6937/Microsoft.WindowsAppRuntime.Redist.1.0.0.zip

(it doesn't say it needs to be run as administrator, but if I don't I get "Provisioning result : 0x80070005")

On the line "Bootstrap.Initialize(0x00010000, "preview3");", hits an exception

System.Runtime.InteropServices.COMException
HResult=0x80070490
Message=Element not found.

This is not specific to preview3, I have not been able to get it to work with any of the preview versions. It is not clear what element is not found or where it might be looking for it.

[pjc50]

Also the links from this text in that document are broken:

"See the list of common error codes.
If the error code doesn't provide enough information, you can find more diagnostic information in the detailed event logs."

[masaito505]

@pjc50
It looks we need the fix below. (Probably it is included in next Windows App SDK preview release?)
microsoft/WindowsAppSDK#1681