Special Awareness When Trying Out Windows Copilot Runtime APIs in 1.7.0-experimental3 in Default WinUI3 Packaged App

[yeelam-gordon]

When trying to use the Windows Copilot Runtime APIs, such as Phi-Silica, in the 1.7.0-experimental3 release as Default WinUI3 Packaged App, you may encounter the following issues:

1. The Microsoft.Windows.AI.Generative library is missing from your project.
2. Execute at LanguageModel.CreateAsync() results in a System.Runtime.InteropServices.COMException '' (i.e. empty error message).
3. Execute at LanguageModel.IsAvailable() results in System.Runtime.InteropServices.COMException: 'Class not registered'

[yeelam-gordon]

If you're experimenting with the Windows Copilot Runtime APIs, such as Phi-Silica, in the 1.7.0-experimental3 release, keep the following in mind to ensure a smooth setup:

1. Target the Correct OS Version
   Update your project file to set the target OS version >= 10.0.22621.0.
   e.g. <TargetFramework>net9.0-windows10.0.22621.0</TargetFramework>
2. Set the Correct Solution Platform
   Before clicking "Start Debugging," select the appropriate Solution Platform in Visual Studio.
   Example: On an ARM machine, choose ARM64.
   This step is important since default is x64 even you are in ARM machine.

These steps should help avoid common pitfalls and ensure a smoother development experience! 🚀

NOTE:
I have already tried debugging the WinUI 3 standard .csproj as an "unpackaged" app. I just needed to add one more line in the .csproj file, and it worked:
<WindowsAppSdkBootstrapInitialize>true</WindowsAppSdkBootstrapInitialize>

[ghost1372]

did you read release notes? https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/experimental-channel#version-17-experimental-170-experimental3

The underlying ML models required for these APIs currently require your device to be running the latest Windows 11 Insider Preview Build on the Dev Channel. Additionally, these APIs require your device to be a Copilot+ PC. See Copilot+ PCs Developer Guide to learn more about these devices. APIs will throw an exception when called on devices lacking the necessary support.

[yeelam-gordon]

did you read release notes? https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/experimental-channel#version-17-experimental-170-experimental3

The underlying ML models required for these APIs currently require your device to be running the latest Windows 11 Insider Preview Build on the Dev Channel. Additionally, these APIs require your device to be a Copilot+ PC. See Copilot+ PCs Developer Guide to learn more about these devices. APIs will throw an exception when called on devices lacking the necessary support.

Yes, that's why I tried on a Copilot + PC, with tried to following the guideline, with additional change so that I can use the AI APIs there.