Is it possible to implement authentication via Azure AD B2C by only configuring a SignIn Policy, without any SignUp or SignUpSignIn policies?
The idea is to add users from the Azure B2C portal instead of allowing users to register themselves via any kind of sign-up form.
When trying to do this I keep getting the following error:
AADB2C99002: User does not exist. Please sign up before you can sign in.
Please help.
It's been already asked here, with no answer: https://feedback.azure.com/forums/169401-azure-active-directory/suggestions/20440876-aadb2c99002-user-does-not-exist-please-sign-up-b
You could sign in with only B2C user. Navigate to Azure AD B2C -> Users in the portal, and there are the users who can sign in.
Add users or invite external user in the portal.
Create a B2C user:
Sign in with the user in a "Sign in" user flow:
Return the id token successfully:
Add users or invite external user using Microsoft Graph API.
Create user:
POST https://graph.microsoft.com/v1.0/users
Content-type: application/json
{
"accountEnabled": true,
"displayName": "Adele Vance",
"mailNickname": "AdeleV",
"userPrincipalName": "AdeleV#contoso.onmicrosoft.com",
"passwordProfile" : {
"forceChangePasswordNextSignIn": true,
"password": "xWwvJ]6NMw+bWH-d"
}
}
Invite user:
POST https://graph.microsoft.com/v1.0/invitations
Content-type: application/json
Content-length: 551
{
"invitedUserEmailAddress": "yyy#test.com",
"inviteRedirectUrl": "https://myapp.contoso.com"
}
You could test them in Graph Explorer.
Related
This sample here shows providing a SignUpSignInPolicyId https://github.com/Azure-Samples/active-directory-aspnetcore-webapp-openidconnect-v2/tree/master/4-WebApp-your-API/4-2-B2C
See the appsettings.json for the service (Web API):
"AzureAdB2C": {
"Instance": "https://fabrikamb2c.b2clogin.com",
"ClientId": "90c0fe63-bcf2-44d5-8fb7-b8bbc0b29dc6",
"Domain": "fabrikamb2c.onmicrosoft.com",
"SignedOutCallbackPath": "/signout/B2C_1_susi_reset_v2",
"SignUpSignInPolicyId": "B2C_1_susi_reset_v2"
//"CallbackPath": "/signin/B2C_1_sign_up_in" // defaults to /signin-oidc
},
I am confused what this does with an API, the API is protected by OAuth2 JWT it cannot control sign up or sign in at all. It just takes a token and validates it.
Why does it need to know anything at all about a sign up or sign in policy?
When I tried to run the application which calls api with policy ,I can login and open the redirect to app.
Appsettings.json
{
"AzureAdB2C": {
"Instance": "https://kavyab2c.b2clogin.com",
"ClientId": "xxxxxxx",
"Domain": "kavyab2c.onmicrosoft.com",
"SignedOutCallbackPath": "/signout/B2C_1_susi",
"SignUpSignInPolicyId": "b2c_1_susi",
"ResetPasswordPolicyId": "b2c_1_reset",
"EditProfilePolicyId": "b2c_1_edit_profile" // Optional profile editing policy
//"CallbackPath": "/signin/B2C_1_sign_up_in" // defaults to /signin-oidc
},
Even without policy it redirected to page.
But to obtain claims or reach the particular controller action or access an api, it requires user authentication if one needs to protect API.
Note:
SignUpSignInPolicyId should not be omitted when calling an Azure AD B2C protected API. If it is not specidfied, the API will not know which user flow to use and cant authenticate the user and gives error.
If custompolicy is used instead of userflow, the SignUpSignInPolicyId
parameter can be omitted, and the created custom policy can be used
to authenticate and authorize users directly by making use of their
username and password credentials.
Reference: Cloud authentication with Azure Active Directory B2C in ASP.NET Core | Microsoft Learn
I'm using Microsoft Graph API to create an application making an HTTP request using the following documentation:
https://learn.microsoft.com/en-us/graph/api/application-post-applications?view=graph-rest-1.0&tabs=http
Example:
POST https://graph.microsoft.com/v1.0/applications
Content-type: application/json
{
"displayName": "MyAppName",
"signInAudience": "AzureADMultipleOrgs"
}
But I need to add some API permissions (Microsoft Graph Application permissions) when creating the applications so I can do other operations like getting the Azure AD groups, modify them, create users, etc. Is there a way to add and grant the permissions programmatically as well without doing it through the portal?
Thank you.
Microsoft Graph object ID
The first thing you'll need is the object ID of Microsoft Graph service principal in your tenant.
00000003-0000-0000-c000-000000000000 is the globally unique application ID for Microsoft Graph, which we can use to get the object ID by making a request like below.
GET https://graph.microsoft.com/v1.0/servicePrincipals?$filter=appid eq '00000003-0000-0000-c000-000000000000'&$select=id,appid,appDisplayName
Example response
The object ID we need is the id in the response
{
"#odata.context": "https://graph.microsoft.com/v1.0/$metadata#servicePrincipals(id,appId,appDisplayName)",
"value": [
{
"id": "bd0a624d-11f8-44ab-a015-d8f276d75ad3",
"appId": "00000003-0000-0000-c000-000000000000",
"appDisplayName": "Microsoft Graph"
}
]
}
References
Application IDs for commonly used Microsoft applications
Adding API Permissions
You can add the API permissions, which is separate from granting admin consent.
PATCH https://graph.microsoft.com/v1.0/applications/{application_id}
Headers
Key
Value
Authorization
Bearer {access token}
Content-Type
application/json
Body
Key
Value
resourceAppId
The API resource to add permissions from, in this case 00000003-0000-0000-c000-000000000000 is for Microsoft Graph
resourceAccess
Array of permissions containing the ID and type
id
Use the globally unique ID of the permission want to add, which you can reference from All permissions and IDs
type
For delegated permissions, use Scope. For application permissions, use Role
Example body
The below permissions are for User.Read (delegated), openid (delegated), and Directory.Read.All (application)
{
"requiredResourceAccess": [
{
"resourceAppId": "00000003-0000-0000-c000-000000000000",
"resourceAccess": [
{
"id": "e1fe6dd8-ba31-4d61-89e7-88639da4683d",
"type": "Scope"
},
{
"id": "37f7f235-527c-4136-accd-4a02d197296e",
"type": "Scope"
},
{
"id": "7ab1d382-f21e-4acd-a863-ba3e13f7da61",
"type": "Role"
}
]
}
]
}
References
Update application API endpoint
requiredResourceAccess resource type
resourceAccess resource type
Granting admin consent
Important to note that you can only grant admin consent with the API for delegated permissions. For application permissions, you'll need to use the Portal and click the button.
POST https://graph.microsoft.com/v1.0/oauth2PermissionGrants
Headers
Key
Value
Authorization
Bearer {access token}
Body
Key
Value
clientId
The Enterprise Application object ID for which you want to grant consent to
consentType
Indicates if authorization is granted for the client application to impersonate all users or only a specific user. AllPrincipals indicates authorization to impersonate all users. Principal indicates authorization to impersonate a specific user. Consent on behalf of all users can be granted by an administrator. Non-admin users may be authorized to consent on behalf of themselves in some cases, for some delegated permissions. Required. Supports $filter (eq only).
resourceId
Use the object ID we obtained earlier for the Microsoft Graph service principal
scope
A space-separated list of the claim values for delegated permissions which you want to grant admin consent to
Example body
{
"clientId": "7f244605-717f-408f-96fb-d369678cea56",
"consentType": "AllPrincipals",
"resourceId": "bd0a624d-11f8-44ab-a015-d8f276d75ad3",
"scope": "openid User.Read"
}
References
Create oAuth2PermissionGrant API endpoint
oAuth2PermissionGrant resource type
Unless you’re creating more then 10 applications, I would just go through the portal.
Creating secrets through the api is not very easy.
The portal has wizards and explanations for most options
Granting permissions and creating applications can be done at the same time, you can also create the application and then have an admin do the admin consent.
Admin consent explained: https://learn.microsoft.com/en-us/azure/active-directory/develop/v2-oauth2-client-creds-grant-flow#request-the-permissions-from-a-directory-admin
Use case : A user is created in Azure AD. As soon as the user is created, another account should be created for the user in B2C tenant (as a federated user).
Question : What is the best approach to achieve the above?
There is no AD trigger when a user is added or changed currently. The similar issue provides a workaround.
The alternative way should be make sure to create an item in a
sharepoint list when you add/delete a user in Azure AD, and then you
create a flow to trigger when an item is created/deleted is sharepoint
list.
Then you could create user to Azure AD B2C tenant with Microsoft Graph API.
POST https://graph.microsoft.com/v1.0/users
Content-type: application/json
{
"accountEnabled": true,
"displayName": "Adele Vance",
"mailNickname": "AdeleV",
"userPrincipalName": "AdeleV#contoso.onmicrosoft.com",
"passwordProfile" : {
"forceChangePasswordNextSignIn": true,
"password": "xWwvJ]6NMw+bWH-d"
}
}
I working with azure ad b2c, and now i want to change user'email. Is it possible to allow users to edit their profile email in edit profile ?? Now my mobile app can change user'name even so reset password.
You can use Update user method of Microsoft Graph API to achieve this.
Http request:
PATCH https://graph.microsoft.com/v1.0/me
Content-type: application/json
{
"mail": "Email_Address"
}
I have an android application that uses Azure AD B2C. Users can sign up using local account/email. Once the user logs into the android application, I'm trying to call the Microsoft Graph API to get the signed-in users details (specifically the Graph API UPN of the user, which is different than the UPN in Azure ad B2C).
The API call I'm trying to make is: https://graph.microsoft.com/v1.0/me
I added the bearer auth token I receive when the user logs in.
However, I receive the following error:
"error": {
"code": "InvalidAuthenticationToken",
"message": "CompactToken parsing failed with error code: 80049217",
"innerError": {
"date": "2020-06-17T06:11:32",
"request-id": "b4e9757e-60d9-453f-820d-9f817831aa0c"
}
}
}
Any idea what I can do to get the user's Graph API UPN? Appreciate the help!
This error occurs when the token used is invalid. If you want to get the logged-in user information, you can request the API at here.
Don't forget to grant administrator consent for this permission,please checkhere.
Update
For Azure b2c users, it is currently not possible to call the Graph API.https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/526