Error "cannot open source file 'DirectML.h'" happened on Version 1903 and OS build 18343.1.

[BruceDai]

Steps to reproduce this issue:

1. Log in as a Windows Insider,
2. Download Windows 10 Insider Preview Client x64 en-us 18343 ISO from https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewadvanced,
3. Transfer the ISO file to installation media,
4. Boot PC from the installation media,
5. Install latest VS with latest Windows SDK (10.0.17763.0)
6. build this HelloDirectML sample project

Please help look at this issue, thanks.

[kevincog-msft]

You'll need to install the Windows SDK Insider Preview as well, and use that when you build the project. You can get it here: https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewSDK

[BruceDai]

Resolved. Thanks.