.net - Azure AD 异常 Microsoft.Identity.Client.MsalServiceException : The provided value for the input parameter 'scope' is not valid

Question

我创建了 azure ad Multi-Tenancy 应用程序以允许组织和公共(public)电子邮件。 目前正在 .net 控制台应用程序上进行测试。

 var tenantId = "d0748657 ........";
 var clientId = "23a9c7a6 ........";
 var authorityUri = $"https://login.microsoftonline.com/common";     
 var redirectUri = "http://localhost";

 var pca = PublicClientApplicationBuilder
          .Create(clientId)
          .WithAuthority(new Uri(authorityUri))
          .WithRedirectUri(redirectUri)
          .Build();

现在说到 smtpScope，我正在使用 https://outlook.office365.com/SMTP.Send

 var smtpScope = new string[] { "https://outlook.office365.com/SMTP.Send",  }; 
            var accounts = await pca.GetAccountsAsync();
            AuthenticationResult result = null;
            if (accounts.Any())          
                result = await pca.AcquireTokenSilent(smtpScope, accounts.FirstOrDefault()).ExecuteAsync();
            
            else
            {
                try
                {
                    result = await pca.AcquireTokenInteractive(smtpScope).ExecuteAsync();
                }
                catch (MsalException ex)
                {
                    Console.WriteLine($"Error acquiring access token: {ex}");
                }

                Console.WriteLine($"Token : {result.AccessToken}");

当我使用我的组织电子邮件登录时，我收到 token 并且一切正常，但当我使用我的个人 Outlook 帐户登录时，我收到此错误

获取访问 token 时出错:MSAL.Desktop.4.56.0.0.MsalServiceException: 错误代码:invalid_scope Microsoft.Identity.Client.MsalServiceException:为输入参数“范围”提供的资源值无效

我在这里缺少什么？ smtpScope 不正确吗？

Answer 1

当我在我的环境中运行您的代码时，我在个人 Outlook 帐户中也遇到了相同的错误:

 var tenantId = "d0748657 ........";
 var clientId = "23a9c7a6 ........";
 var authorityUri = $"https://login.microsoftonline.com/common";     
 var redirectUri = "http://localhost";

 var pca = PublicClientApplicationBuilder
          .Create(clientId)
          .WithAuthority(new Uri(authorityUri))
          .WithRedirectUri(redirectUri)
          .Build();

 var smtpScope = new string[] { "https://outlook.office365.com/SMTP.Send",  }; 
            var accounts = await pca.GetAccountsAsync();
            AuthenticationResult result = null;
            if (accounts.Any())          
                result = await pca.AcquireTokenSilent(smtpScope, accounts.FirstOrDefault()).ExecuteAsync();
            
            else
            {
                try
                {
                    result = await pca.AcquireTokenInteractive(smtpScope).ExecuteAsync();
                }
                catch (MsalException ex)
                {
                    Console.WriteLine($"Error acquiring access token: {ex}");
                }

                Console.WriteLine($"Token : {result.AccessToken}");

回应:

AFAIK, SMTP.Send permission is currently available only for work or school(organizational) accounts, not personal Microsoft accounts after Feb 2023 to generate OAuth2 access token.

当我使用组织帐户再次运行相同的代码时，我在响应中成功获得了 token ，如下所示:

为了确认这一点，我对 jwt.ms 中的 token 进行了解码其中 aud 和 scp 声明如下:

或者，您可以通过添加 Mail.Send 切换到 Microsoft Graph API，以从个人 Outlook 帐户发送邮件。为此，请通过替换 scope 值来修改代码:

using Microsoft.Identity.Client;

var clientId = "appId";
var authorityUri = $"https://login.microsoftonline.com/common";
var redirectUri = "http://localhost";

var pca = PublicClientApplicationBuilder
         .Create(clientId)
         .WithAuthority(new Uri(authorityUri))
         .WithRedirectUri(redirectUri)
         .Build();

var graphScopes = new string[] { "https://graph.microsoft.com/Mail.Send" };

var accounts = await pca.GetAccountsAsync();
AuthenticationResult result = null;

if (accounts.Any())
{
    result = await pca.AcquireTokenSilent(graphScopes, accounts.FirstOrDefault()).ExecuteAsync();
}
else
{
    try
    {
        result = await pca.AcquireTokenInteractive(graphScopes).ExecuteAsync();
    }
    catch (MsalException ex)
    {
        Console.WriteLine($"Error acquiring access token: {ex}");
    }

    Console.WriteLine($"Token : {result.AccessToken}");
}

当我通过运行上述代码使用个人 Outlook 帐户登录时，我收到如下同意提示:

接受上述同意后，我在控制台中成功获取了访问 token ，如下所示:

引用: SMTP.Send OAuth permission not working for consumer accounts - Microsoft Q&A by Akshay-MSFT