Experiencing the same issue while targeting only Android and Windows in my MAUI app.

Workaround described in issue dotnet/maui#3903 still works, but the conclusion in that thread was that net6. iOS lib was the problem. I am targeting only Android and Windows and still issue exists.

System.TypeLoadException: 'Could not resolve type with token 01000023 from typeref (expected class 'System.Threading.Tasks.ValueTask`1' in assembly 'mscorlib, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e')'

This is my test code:



var pc = PublicClientApplicationBuilder.Create("--CLIENT--ID--")
		.WithAuthority("https://login.microsoftonline.com/--TENANT--ID--/")
		.WithDefaultRedirectUri()
		.Build();


	var t = await pc.AcquireTokenInteractive(new string[] { "User.Read" })
		.WithPrompt(Microsoft.Identity.Client.Prompt.ForceLogin)
#if ANDROID
		.WithParentActivityOrWindow(Platform.CurrentActivity)
#endif
		.ExecuteAsync();


	var graphClient = new GraphServiceClient("https://graph.microsoft.com/beta", null);


	graphClient.AuthenticationProvider = new DelegateAuthenticationProvider(async (request) => {
		request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", t.AccessToken);
		await Task.FromResult<object>(null);
	});


	var resp = await graphClient.Me.Request().GetAsync();

	uLabel.Text = resp.DisplayName;

this code works fine on Windows, but not on Android

MAUI support #413

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