My goal is to bypass the login screen and use Azure AD as the Identity Provider.
Given I am already logged in with my Azure AD user, I'd like to retrieve the authorization token using the silent flow and use this for resources that are protected.
I have a web application running on ASP.NET MVC 5 and a user-managed and backed by Azure AD (i.e. federated user). As a starting point, I have followed the steps in this article: Integrated Windows Authentication.
If I understand correctly, I should be able to use silent authentication since my users are federated and my application is registered as a public application.
In Azure AD, my app is registered with the following properties:
The code is straightforward, from the url.
var app = PublicClientApplicationBuilder.CreateWithApplicationOptions(
new PublicClientApplicationOptions()
{
ClientId = "<clientId>",
TenantId = "<tenantId>",
LogLevel = LogLevel.Verbose,
AzureCloudInstance = AzureCloudInstance.AzurePublic,
})
.Build();
var scopes = new [] { "User.Read" };
var result = await app.AcquireTokenByIntegratedWindowsAuth(scopes)
.WithUsername("<username>")
.ExecuteAsync();
The call for acquiring the token throws the following exception:
"AADSTS65001: The user or administrator has not consented to use the application with ID 'xxx' named 'xxx'. Send an interactive authorization request for this user and resource"
Per the documentation, User.Read doesn't need Admin Consent.
So what am I doing wrong here?
EDIT:
I have constructed a URL that prompts for user consent: https://login.microsoftonline.com/tenantId/oauth2/authorize?client_id=clientId&response_type=code&redirect_uri=<myApp>&nonce=1234&resource=User.Read&prompt=consent
It takes me to the screen where I need to pick my account, and after that, I get redirected to my app, where I get the same exception again.
So it doesn't show any consent screen, just asking me to pick the Microsoft account I want to use. Is this because of consent for User.Read is already granted by the admin?
But why am I still receiving the error? I'm a bit confused at this point.
You're mixing two different AAD OAuth mechanisms (aka v1 and v2 endpoints). The v1 endpoint uses Resources (https://graph.microsoft.com) while the v2 endpoint use Scopes (user.read). So when you request resource=User.Read, you are passing it an invalid resource name.
I would recommend using the v2 endpoint with the following URI prototype (line breaks for readability):
https://login.microsoftonline.com/common/oauth2/v2.0/authorize
?client_id={clientId}
&response_type=id_token
&redirect_uri={your_app}
&response_mode=fragment
&scope=user.read
Because Integrated Windows Authentication is a silent flow, the user of your application must have previously consented to use the application or the tenant admin must have previously consented to all users in the tenant to use the application.
You can force user consent through a URL request with prompt=consent, the url will look like:
https://login.microsoftonline.com/<tenant-id>/oauth2/authorize?client_id=<client id>&response_type=code&redirect_uri=<Your-Redirect-URI-Https-Encoded>&nonce=1234&resource=<your-resource-Https-encoded>&prompt=consent
If it needs admin consent, use $prompt=admin_consent instead.(need to use admin account to sign in)
For more details about fix error AADSTS65001, you could refer to this article.
With delegated permissions, every user will need to consent to the application. If you do not want that requirement, a tenant administrator can consent for all users from the Azure Portal.
Related
New to Azure AD. I have a Winforms application that I'm adding Azure AD (with MFA) authentication to.
In Azure AD, I've registered an application and added some test users.
The users have MFA enabled (through Azure).
I'm using the Microsoft Identity Client and authorization works as expected.
Is there any way to force the Authentication popup to preload with a user name
and prohibit users from entering a different one?
Here is the code snippet for aquiring the token:
authResult = await PublicClientApp.AcquireTokenInteractive(scopes)
.WithAccount(firstAccount)
.WithParentActivityOrWindow(parentForm.Handle)
.WithPrompt(Prompt.ForceLogin) // or Prompt
.ExecuteAsync();
We would like the popup to be preloaded with a specific username rather than typing or selecting an available one from the prompt.
You can use the WithLoginHint() method and pass the UPN of the account as a parameter:
https://learn.microsoft.com/en-us/dotnet/api/microsoft.identity.client.acquiretokeninteractiveparameterbuilder.withloginhint?view=azure-dotnet#microsoft-identity-client-acquiretokeninteractiveparameterbuilder-withloginhint(system-string)
I have a web application that allows me to sign in to my OneDrive account using delegated permissions to authorize the app to browse my drive files on my behalf. I'm now trying to build a server-side job that needs to work with these files and therefore needs application permissions granted with admin consent.
I've followed various instructions to achieve this, but no matter what I do I keep getting this 403 error:
Either scp or roles claim need to be present in the token
The application I've registered in Azure portal has the application permission Files.Read.All and I've granted admin consent. I'm obtaining my access token as follows:
IConfidentialClientApplication app = ConfidentialClientApplicationBuilder.Create("<client-id>")
.WithClientSecret("<secret>")
.WithAuthority(new Uri("https://login.microsoftonline.com/common"))
var apiUrl = "https://graph.microsoft.com/";
string[] scopes = { $"{apiUrl}.default" };
result = await app.AcquireTokenForClient(scopes).ExecuteAsync();
I'm then using the returned token to request "{apiUrl}v1.0/drives/<my-drive-id>/items/<drive-item-id>"
And this is where I get the access denied. Clearly the API expects my token to have either a roles claim or an scp claim.
After reading this related post on SO I did wonder if the problem is related to the fact I'm using the same app registration for the front end and back end operations (so it has a mix of delegated and application permissions) but I tried creating a new app registration with only the application permissions and it was the same error.
Also, that post suggests I should expect to see either and scp or a roles claim in my token (depending on choice of auth flow) but I get neither of these claims. That led me to this other SO post which suggests I need to explicitly include roles in my access token, but roles isn't listed as an optional claim in the Token configuration blade of the app registration.
So I'm stuck. Can anyone help?
UPDATE 1
I've tried constructing the auth request manually now using a POST to https://login.microsoftonline.com/<tenant-id>/oauth2/v2.0/token and a form body that includes grant_type=client_credentials and now I'm finding the roles claim is returned in the token. So I guess the ConfidentialClientApplicationBuilder wasn't building a client credentials auth request as I had assumed. However, when I use this token to make the above Graph API request for a drive item I get the error:
Tenant does not have a SPO license
When I've encountered this before I've been told to use common instead of my tenant ID. However, when I make that change in this case I'm again left with a token that doesn't have a roles claim.
The absence of the roles claim indicates that you app (or service) hasn't been granted any application permissions (i.e. app roles) for the API (in this case, Microsoft Graph), in the tenant where the token request is being made.
You need to ensure the the application permissions (app roles) you expect the app to use to make the API call have been granted in the tenant where you are making the API call.
Regarding adding external Gmail users to the Azure Active Directory Group, I have invited a Gmail user from the azure portal and the Gmail user has granted the consent to access the Application registered in Azure Enterprise Application.
When the Gmail user tried to Sign In into my Single Sign-On page, Azure validation is throwing the exception, when I am trying to acquire token by AcquireTokenAsync() Method
accessing_ws_metadata_exchange_failed
Response status code does not indicate success: 406 (NotAcceptable).
Below is my C# code to validate the users against Azure Active Directory.
var authority = string.Format(CultureInfo.InvariantCulture, "https://login.windows.net/{0}", tenantId);
var authenticationcontext = new AuthenticationContext(authority);
var upc = new UserPasswordCredential(username, password); //gmailusername and password
authenticationResult = authenticationcontext.AcquireTokenAsync("https://graph.windows.net", clientId, upc).Result;
The login flow you are using doesn't really work well with federated users (like these Guests).
Resource Owner Password Credentials (ROPC) grant flow that you are using here is only really meant to be a legacy upgrade path and isn't really modern authentication.
By the way, that login flow also does not support users with Multi-Factor Authentication or an expired password.
You could use Authorization code flow to login(back-end web app/native app).
In the case of a back-end Web app,
authorization code flow works by you redirecting the user to login,
getting a code back which you exchange for tokens.
In native apps it can be used by showing a pop-up of the login page to the user.
It can be used through different overloads of AcquireTokenAsync().
I trying to read user data from their Microsoft live account. I have written code as below:
public void GetUserData(){
var authContext = new AuthenticationContext("https://login.microsoftonline.com/common/");
var result = _authenticationContext
.AcquireTokenAsync("https://graph.microsoft.com", "<my client/app ID>", "<redirect URI>", new PlatformParameters(PromptBehavior.RefreshSession))
.Result;
var accessToken = result.AccessToken;
var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer",accessToken);
var userResponse = httpClient.GetStringAsync("https://graph.microsoft.com/beta/me/").Result;
//DO SOMTHING WITH DATA
}
my code is working fine when I used my AAD credentials, but when I used my personal account it is giving the following error.
AADSTS50020: User account 'XXXX#outlook.com' from identity provider
'live.com' does not exist in tenant 'Default Directory' and cannot
access the application 'XXXXXXXXXXXXXXXXX' in that
tenant. The account needs to be added as an external user in the
tenant first. Sign out and sign in again with a different Azure Active
Directory user account.
Here is the screenshot:
It's similar to this question. could someone help me out?
v1 endpoints require that the user is a member in a directory.
You should probably use the v2.0 endpoints for this: https://learn.microsoft.com/en-us/azure/active-directory/develop/active-directory-appmodel-v2-overview
If you expect only consumer MS accounts to login, you can specify the authorize URL as:
https://login.microsoftonline.com/consumers/oauth2/v2.0/authorize
First, for the error massage in your question, you need to add the live account into your directory first and then try to use Azure AD v2 endpoint to authenticate. You can not sign in the app with the external account which was not in that directory.
I assume that you want any Microsoft live account can use your app.
Based on this requirement, I suggest you can use Azure AD B2C to achieve this. Azure AD B2C can enables your application to authenticate with any Microsoft account. You can add Microsoft Account as a social identity providers. So that any live accounts can sign up and sign in your App through Azure AD B2C.
You can see more details about Providing sign-up and sign-in to consumers with Microsoft accounts in this official document.
Hope this helps.
I am getting a consent error when trying to obtain a token. Because of our application, we can't show an interactive dialog to give consent.
"AADSTS65001: The user or administrator has not consented to use the
application with ID <'my native client app id'>. Send an
interactive authorization request for this user and resource.
AuthenticationContext ctx = new AuthenticationContext(
string.Format("https://login.microsoftonline.com/{0}","mytenant.onmicrosoft.com"));
UserPasswordCredential cred = new UserPasswordCredential("login#mytenant.onmicrosoft.com", "Password");
var result = ctx.AcquireTokenAsync("my api uri", "my native client id", cred);
We are using the grant_type=password and client_id is a Native app id, and resource is the Web API app URI.
Permissions-wise, from the client app, a delegated permission has been given to access the api app and have also tried setting oauth2AllowImplicitFlow : true in the manifest.
All applications have been created in the new preview Azure AD section of the new portal (portal.azure.com)
Unfortunately if your application needs access to certain resources like the Graph API, you will need to prompt for consent at least one time.
Even if your app doesn't have an interactive login experience, you should be able to prompt this once to unblock your scenario in your tenant.
Use the following URL:
https://login.microsoftonline.com/<TenantID>/oauth2/authorize?client_id=<AppID>&response_type=code&redirect_uri=<RedirectURI>&resource=<ResourceURI>&prompt=admin_consent
You can see here we have just simply generated the login URL which would be generated as part of an interactive login experience. You will need to fill out your own specific data like Reply URL, App ID, Resource URI, etc...
Note that we added a final query string at the end where we are forcing a "consent" prompt. This should be done by an Administrator, who would be able to consent on behalf of the whole tenant. Once you have done that, the username/password flow should start working for you.
Also, as an additional note, implicit grant flow has nothing to do with consent.
Please read this section in the OAuth 2 spec:
https://www.rfc-editor.org/rfc/rfc6749#section-1.3.2
You should only use this setting if you are creating a single-page application with something like JavaScript; Otherwise, there are significant security concerns with this setting on applications that should not have it.