Microsoft Graph client error : Authentication challenge is required

Microsoft Graph client error : Authentication challenge is required

我正在尝试使用 Microsoft 在 NuGet 中提供的 Graph SDK 访问 Office 365 用户,我的代码是:

var cca = ConfidentialClientApplicationBuilder
                .Create("ClientId")
                .WithClientSecret("ClientSecret")
                .WithTenantId("TenantId")
                .Build();

List<string> scopess = new List<string>();
scopes.Add("https://graph.microsoft.com/.default");
scopes.Add("Calendars.Read");
// i tried each scope alone and same result
var authenticationProvider = new AuthorizationCodeProvider(cca, scopes.ToArray());
GraphServiceClient graphClient = new GraphServiceClient(authenticationProvider);
var x = await graphClient.Users.Request().GetAsync();

最后一行出现错误

Authentication challenge is required

我的 Azure Active Directory 应用程序注册设置是:

可能我做错了什么但不确定是什么! 我正在使用 Microsoft Docs 作为参考

您正在使用 client credential provider

var authenticationProvider = new AuthorizationCodeProvider(cca, scopes.ToArray());替换为ClientCredentialProvider authenticationProvider = new ClientCredentialProvider(cca);

请注意,您定义了 GraphServiceClient graphClient,但您在下一行中使用了 graphClient2graphClient2.Users.Request().GetAsync()。请查收。