GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. The application obtains a token through username and password, and then calls the Microsoft Graph to get information about the signed-in user and their manager.
The error handling is also quiet complex detailed in the sample. The aim is to decouple the authentication method from an app. Azure AD controls the login experience to avoid exposing secrets like passwords to a website or an app. The code for handling the token acquisition process is simple, as it boils down to calling the AcquireTokenByUsernamePasswordAsync method of PublicClientApplication class.
Given that the name of the sample is pretty long, and so are the name of the referenced NuGet packages, you might want to clone it in a folder close to the root of your hard drive, to avoid file size limitations on Windows. When you run the sample, if you are running on a domain joined or AAD joined Windows machine, it will display your information as well as the information about your manager. The instructions so far used the sample is for an app in a Microsoft test tenant: given that the app is multi-tenant, anybody can run the sample against this app entry.
Run the script to create your Azure AD application and configure the code of the sample application accordinly. Troubleshooting information as well as documentation about other ways of running the scripts is available in App Creation Scripts. When the Register an application page appears, enter your application's registration information:.
Note that if there are more than one redirect URIs, you'd need to add them from the Authentication tab later after the app has been created succesfully. On the app Overview page, find the Application client ID value and record it for later. You'll need it to configure the Visual Studio configuration file for this project. At this stage permissions are assigned correctly but the client app does not allow interaction. Therefore no consent can be presented via a UI and accepted to use the service app.
You need to be an Azure AD tenant admin to do this. Use Stack Overflow to get support from the community. Ask your questions on Stack Overflow first and browse existing issues to see if someone has asked your question before. Make sure that your questions or comments are tagged with [ msal dotnet ]. If you find a bug in the sample, please raise the issue on GitHub Issues. To provide a recommendation, visit the following User Voice page.
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Go back.You can use the OAuth 2. This type of grant is commonly used for server-to-server interactions that must run in the background, without immediate interaction with a user. These types of applications are often referred to as daemons or service accounts.
This article describes how to program directly against the protocol in your application. Also take a look at the sample apps that use MSAL. The OAuth 2. In this scenario, the client is typically a middle-tier web service, a daemon service, or a web site.
For a higher level of assurance, the Microsoft identity platform also allows the calling service to use a certificate instead of a shared secret as a credential. The Microsoft identity platform endpoint doesn't support all Azure AD scenarios and features. To determine whether you should use the Microsoft identity platform endpoint, read about Microsoft identity platform limitations. In the more typical three-legged OAutha client application is granted permission to access a resource on behalf of a specific user.
The permission is delegated from the user to the application, usually during the consent process. However, in the client credentials two-legged OAuth flow, permissions are granted directly to the application itself. When the app presents a token to a resource, the resource enforces that the app itself has authorization to perform an action and not the user. The entire client credentials flow looks similar to the following diagram.
We describe each of the steps later in this article. These two methods are the most common in Azure AD and we recommend them for clients and resources that perform the client credentials flow. A resource can also choose to authorize its clients in other ways.Azure Active Directory SSO with OAuth for Grafana
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The authorization endpoint I am using looks like this:. The acquired token version is related to your access resource that is protected by v1 endpoint or v2 endpoint.
Thank you for enlightening me that there are differences in how an App representing the Resource is registered. Basically the difference itself is made by the 'accessTokenAcceptedVersion' field in the App's Manifest. Initially it was 'null' but I've changed it to '2' as below. According to docs, the 'null' value should as well permit v2 tokens - it is a issue on AAD's side, in 'Open' state. Learn more. Azure AD - how to obtain v2 access token Ask Question. Asked 1 year, 3 months ago. Active 1 year, 3 months ago.
Viewed 1k times. What am I doing wrong? Are you including the proper scopes? My issue was that I was expecting an access token 'v2' but i was getting a 'v1' access token. The content of the tokens are slightly different: docs. Active Oldest Votes. SunnySun SunnySun 1, 1 1 gold badge 2 2 silver badges 8 8 bronze badges. Thanks for the lead on this issue.
As I know, there should be no difference for azure portal and app registration portal. You could register an app Converged applications-v2, Azure AD only applications-v1 in the app registration portal, when you check their manifest, you could find there is no accessTokenAcceptedVersion for the v1 app. However, in azure portal, the app registration is for the v1 app, app registration preview is for the v2 app, you could check the v1 app manifest in app registration, it also has no accessTokenAcceptedVersion.
Microsoft identity platform and OAuth 2.0 authorization code flow
But v2 app registration is still preview in azure portal, if you check v1 app manifest in the app registration previewthe accessTokenAcceptedVersion is null, so suggest you do not check v1 app manifest in the app registration preview. Sign up or log in Sign up using Google. Sign up using Facebook.
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Post as a guest Name. Email Required, but never shown.You expose a Web API and you want to protect it so that only authenticated users can access it.
You want to enable apps authenticating users with both work and school accounts or Microsoft personal accounts formerly live account to use your Web API. NET to acquire a token for Microsoft Graph using the on-behalf-of flow 3. This Web API is exercised by a. NET Desktop console application. This subfolder contains a Visual Studio solution made of two applications: the desktop application TodoListClientand the Web API TodoListService Note: Even if you'll probably get the most of this tutorial by going through the part in the proposed order, it's also possible to jump directly to the second part or third part.
Several applications signed-in under the same identities share the same to-do list. Next time a user runs the application, the user is signed-in with the same identity as the application maintains a cache on disk. Users can clear the cache which will also have the effect of signing them out. The second phase of the tutorials modifies the Web API so that the todo-items also mention the identity of the user adding them. The experience in the third phase is the same as in the second phase, but users can sign-in with their personal Microsoft account.
Given that the name of the sample is pretty long, that it has sub-folders and so are the name of the referenced NuGet packages, you might want to clone it in a folder close to the root of your hard drive, to avoid file size limitations on Windows. Use Stack Overflow to get support from the community.
Ask your questions on Stack Overflow first and browse existing issues to see if someone has asked your question before. Make sure that your questions or comments are tagged with [ msal dotnet ].
If you find a bug in the sample, please open an issue on GitHub Issues. To provide a recommendation, visit the following User Voice page. Skip to main content. Exit focus mode. Learn at your own pace. See training modules. Dismiss alert. Calling an ASP. Desktop app calls Web API. This first part, presents an ASP. NET Core 3. This second part presents an increment where the Web API now calls Microsoft Graph on-behalf of the user signed-in in the desktop application.
NET to acquire a token for Microsoft Graph using the on-behalf-of flow. This third part presents an increment where the Web API now calls Microsoft Graph on-behalf of the user signed-in in the desktop application, but with an alternative architecture.
This part, presents the ASP.While the service is standards-compliant, there can be subtle differences between any two implementations of these protocols. The information here will be useful if you choose to write your code by directly sending and handling HTTP requests or use a third party open-source library, rather than using one of our open-source libraries. Not all Azure AD scenarios and features are supported by the Microsoft identity platform endpoint.
To determine if you should use the Microsoft identity platform endpoint, read about Microsoft identity platform limitations. In nearly all OAuth 2. Every app that wants to accept both personal and work or school accounts must be registered through the App registrations experience in the Azure portal before it can sign these users in using OAuth 2. The app registration process will collect and assign a few values to your app:. For more details, learn how to register an app.
Once registered, the app communicates with Microsoft identity platform by sending requests to the endpoint:. To learn how to interact with these endpoints, choose a particular app type in the Protocols section and follow the links for more info.
Any app registered in Azure AD can use the Microsoft identity platform endpoint, even if they don't sign in personal accounts. This way, you can migrate existing applications to Microsoft identity platform and MSAL without re-creating your application. The Microsoft identity platform implementation of OAuth 2. Though a party must first authenticate with Microsoft identity platform to receive the bearer token, if the required steps are not taken to secure the token in transmission and storage, it can be intercepted and used by an unintended party.
While some security tokens have a built-in mechanism for preventing unauthorized parties from using them, bearer tokens do not have this mechanism and must be transported in a secure channel such as transport layer security HTTPS. If a bearer token is transmitted in the clear, a malicious party can use a man-in-the-middle attack to acquire the token and use it for unauthorized access to a protected resource. The same security principles apply when storing or caching bearer tokens for later use.
Always ensure that your app transmits and stores bearer tokens in a secure manner. For more security considerations on bearer tokens, see RFC Section 5. Further details of different types of tokens used in the Microsoft identity platform endpoint is available in the Microsoft identity platform endpoint token reference. If you're ready to see some example requests, get started with one of the below tutorials.
Each one corresponds to a particular authentication scenario.The OAuth 2. The idea is to propagate the delegated user identity and permissions through the request chain.
For the middle-tier service to make authenticated requests to the downstream service, it needs to secure an access token from the Microsoft identity platform, on behalf of the user. This article describes how to program directly against the protocol in your application. Also take a look at the sample apps that use MSAL.
Assume that the user has been authenticated on an application using the OAuth 2. The steps that follow constitute the OBO flow and are explained with the help of the following diagram. In this scenario, the middle-tier service has no user interaction to obtain the user's consent to access the downstream API.
Therefore, the option to grant access to the downstream API is presented upfront as a part of the consent step during authentication. To learn how to set this up for your app, see Gaining consent for the middle-tier application. There are two cases depending on whether the client application chooses to be secured by a shared secret or a certificate.
When using a shared secret, a service-to-service access token request contains the following parameters:. The above access token is a v1. This is because the token is provided based on the resource being accessed.
The Microsoft Graph is setup to accept v1. Only applications should look at access tokens. Clients must not inspect them. An error response is returned by the token endpoint when trying to acquire an access token for the downstream API, if the downstream API has a Conditional Access policy such as multi-factor authentication set on it.
The middle-tier service should surface this error to the client application so that the client application can provide the user interaction to satisfy the Conditional Access policy. Now the middle-tier service can use the token acquired above to make authenticated requests to the downstream web API, by setting the token in the Authorization header.
Depending on the architecture or usage of your application, you may consider different strategies for ensuring that the OBO flow is successful. In all cases, the ultimate goal is to ensure proper consent is given so that the client app can call the middle-tier app, and the middle tier app has permission to call the back-end resource.
Previously the Microsoft account system personal accounts did not support the "Known client application" field, nor could it show combined consent. This has been added and all apps in the Microsoft identity platform can use the known client application approach for gettign consent for OBO calls. The middle tier application adds the client to the known client applications list in its manifest, and then the client can trigger a combined consent flow for both itself and the middle tier application.
The user provides consent for both applications, and then the OBO flow works. Resources can indicate that a given application always has permission to receive certain scopes. This is primarily useful to make connections between a front-end client and a back-end resource more seamless. A resource can declare multiple pre-authorized applications - any such application can request these permissions in an OBO flow and receive them without the user providing consent.
A tenant admin can guarantee that applications have permission to call their required APIs by providing admin consent for the middle tier application. To do this, the admin can find the middle tier application in their tenant, open the required permissions page, and choose to give permission for the app. To learn more about admin consent, see the consent and permissions documentation.
In some scenarios, you may only have a single pairing of middle-tier and front-end client. In this scenario, you may find it easier to make this a single application, negating the need for a middle-tier application altogether. Then, request consent from this single application to the back-end resource.
However, access tokens acquired through the implicit grant flow can still be redeemed by a confidential client even if the initiating client has a wildcard reply URL registered. Learn more about the OAuth 2. You may also leave feedback directly on GitHub. Skip to main content. Exit focus mode.The OAuth 2. Using the Microsoft identity platform implementation of OAuth 2. This guide is language-independent, and describes how to send and receive HTTP messages without using any of the Azure open-source authentication libraries.
This article describes how to program directly against the protocol in your application. Also take a look at the sample apps that use MSAL. To determine if you should use the Microsoft identity platform endpoint, read about Microsoft identity platform limitations.
It's used to perform authentication and authorization in the majority of app types, including web apps and natively installed apps. Some permissions are admin-restricted, for example writing data to an organization's directory by using Directory. If your application requests access to one of these permissions from an organizational user, the user receives an error message that says they're not authorized to consent to your app's permissions.
To request access to admin-restricted scopes, you should request them directly from a company administrator. For more information, read Admin-restricted permissions. Click the link below to execute this request! At this point, the user will be asked to enter their credentials and complete the authentication. The Microsoft identity platform endpoint will also ensure that the user has consented to the permissions indicated in the scope query parameter.
If the user has not consented to any of those permissions, it will ask the user to consent to the required permissions. Details of permissions, consent, and multi-tenant apps are provided here.
The following table describes the various error codes that can be returned in the error parameter of the error response. Try executing this request in Postman!
Microsoft identity platform and OAuth 2.0 On-Behalf-Of flow
Don't forget to replace the code. Execute this request in Postman! Replace the Authorization header first. Refresh tokens do not have specified lifetimes. Typically, the lifetimes of refresh tokens are relatively long.
However, in some cases, refresh tokens expire, are revoked, or lack sufficient privileges for the desired action. Your application needs to expect and handle errors returned by the token issuance endpoint correctly.
Although refresh tokens aren't revoked when used to acquire new access tokens, you are expected to discard the old refresh token. The authorization server MAY revoke the old refresh token after issuing a new refresh token to the client.
For a description of the error codes and the recommended client action, see Error codes for token endpoint errors.
You may also leave feedback directly on GitHub. Skip to main content. Exit focus mode. Microsoft identity platform and OAuth 2. Tip Click the link below to execute this request!
Tip Try executing this request in Postman!