AADSTS700016: Application with identifier

Question

We are providing Azure AD integration for our clients to fetch user and application data. Our Azure app registration’s client ID and secret had expired recently, so we regenerated a new secret. After doing so, we started encountering the following error:

AADSTS700016: Application with identifier `

Answer 1

Answer:

The AADSTS700016: UnauthorizedClient_DoesNotMatchRequest error indicates an issue with the integration of your application with Azure AD, particularly related to the application registration. Here are troubleshooting steps you can take to resolve the issue:

Troubleshooting Steps:

1. Verify Application Registration:
   • Ensure that your application is correctly registered in Azure Active Directory (AAD). Confirm that the Application (client) ID used in your code matches the one in your Azure app registration.
   • Check that you are using the correct Directory (tenant) ID.
2. Check Redirect URIs:
   • Ensure that the redirect URI configured in your Azure app registration matches the one used in the authentication requests. Any mismatch will prevent successful authentication.
3. Review API Permissions:
   • Make sure the necessary API permissions are granted and that admin consent has been provided if required. Navigate to API permissions in your Azure app settings and verify the correct permissions are in place.
4. Regenerate Client Secret:
   • Double-check that the regenerated client secret is correctly updated in your application's configuration. Ensure that this secret has not expired and is being utilized as intended.
5. Ensure Multi-Tenant Configuration (if applicable):
   • If your application is designed to be multi-tenant, confirm it is configured accordingly and that administrators from other tenants have granted consent.
6. Tenant-Specific Endpoint:
   • Verify that your authentication requests are sent to the correct endpoint for your Azure tenant, incorporating your tenant ID:

     
          https://login.microsoftonline.com/{tenant-id}/oauth2/v2.0/token
     
     

   • If you're using a common endpoint (e.g., https://login.microsoftonline.com/common), ensure that your application is accessible to users from multiple tenants.
7. Consult the Azure Portal Logs:
   • Check the Azure AD sign-in logs in the Azure portal:
     • Go to Azure Active Directory -> Sign-ins.
     • Look for failed sign-in attempts and review the details for any underlying issues.
8. Test with Postman or curl:
   • You can use tools like Postman or curl to manually test token generation and API requests, which can help isolate whether the problem lies in your configuration or application code.

Resolution Steps:

1. Correct Configuration:
   • If you identify any configuration mistakes (e.g., incorrect IDs or secrets), make the necessary corrections in your application's configuration.
2. Grant Admin Consent Again:
   • If API permissions have changed, re-grant admin consent by navigating to API permissions in your Azure portal and clicking Grant admin consent for [Tenant Name].
3. Confirm Application Status:
   • Make sure the application is not disabled or accidentally deleted in Azure AD. If needed, re-register the application.
4. Update Your Application Logic:
   • If specific conditions (like tenant restrictions) affect authentication, adjust your application logic to handle these scenarios smoothly.

Answer 2

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