React Native Windows: C++ UWP - How to open a folder : LaunchFolderAsync-> (A method was called at an unexpected time) -

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I cannot open a folder to windows explorer using a native module (C++ UWP).

I tried following the appropriate manner UWP C++

StorageFolder folder{ co_await StorageFolder::GetFolderFromPathAsync(filePath) };
OutputDebugStringW(L"openFolder StorageFolder passed.\n");
bool launched = co_await Launcher::LaunchFolderAsync(folder); // <-Error happened
...
catch (const winrt::hresult_error& ex)
{
    std::wstringstream ss;
    ss << L"[openFolder] Error: " << ex.message().c_str() << L"\n";
    OutputDebugStringW(ss.str().c_str());

    promise.Resolve(false);
    co_return;
}

I get an error when I click on the button in the interface of the React-Native Windows app (the app is active and in focused). I run the app using "npx react-native start --reset-cache" and "npx react-native run-windows".

I get the fabulous error (DebugView) :

Error: A method was called at an unexpected time.

I tried normalising the path before doing the StorageFolder does not change the outcome.

I also tried "ShellExecuteW" but no luck on this side. I would prefer to use the approved method for UWP.

My manifest has "<rescap:Capability Name="broadFileSystemAccess"/>" and I tried adding "<rescap:Capability Name="runFullTrust" />" same result. The app is authorised in the Privacy settings for filesystem and I read and write files outside approved UWP folders without any issues.

I tried to open different locations and I always get that error.

Any help would be much appreciated.

Edit: I tried to integrate it as a button in the UI and click manually on the button to trigger the call like that :

const CustomModule: {
    openFolder(filePath: string): Promise<boolean>;
  } = NativeModules.NativeReactModule;

Then in memo :

<View key={key}><Button title="Open" onPress={() => onRowButtonPressOpenFolder(item)} /></View>

Finally :

const onRowButtonPressOpenFolder = useCallback(async () => {const openFolder: any = await CustomModule.openFolder(route.params.folder);}, []);

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