Could not find identity for access token. graph API authentication issues

Question

Hi Team, This question is asked as I am trying to use the web activity in an ADF pipeline to execute a query against the graph api, which is also a following up action taken after a previous question posted in the forum https://learn.microsoft.com/en-us/answers/questions/1465462/error-the-authorization-header-is-missing-when-usi?source=docs. The way we do it is shared in the following:

To authenticate , I am setting the authentication method to credential and configuring the app id of an app registration I made with the following scopes ,the client secret for the app registration is in a linked KeyVault with auth to the KeyVault using the managed identity of the ADF. For the resource I am setting https://management.azure.com/.default as I found https://graph.azure.com/ didn't work The error I am getting is saying:

"Bearer authorization_uri="https://login.windows.net/", error="invalid_token", error_description="Could not find identity for access token."

"Bearer authorization_uri="https://login.windows.net/", error="invalid_token", error_description="Could not find identity for access token."

So to me it appears that I am successfully creating an access token but I am wondering if my app registration is missing something.

Answer 1

Sharon It seems like you're encountering an issue with authentication and access token retrieval while using the Azure Data Factory (ADF) web activity to execute a query against the Microsoft Graph API. Let's break down the error message and the steps you've taken so far:

1. Error Message:

1. Authentication Configuration**:
   • You're using the "credential" authentication method in the web activity.
   • Configuring the application ID of an app registration with necessary scopes.
   • The client secret for the app registration is stored in a Key Vault, with the Azure Data Factory having managed identity access to the Key Vault.

Based on the error message, it seems like the access token being generated is not being associated with a valid identity, leading to the "invalid_token" error.

Here are a few steps you can take to troubleshoot and resolve the issue:

1. Check Application Registration Configuration:

• Ensure that the application registration (App ID) has been configured with the necessary API permissions (scopes) required for accessing the Microsoft Graph API. Double-check that the permissions are correctly configured and have been consented to if required.

2. Check Key Vault Access:

• Verify that the Azure Data Factory's managed identity has the necessary permissions (e.g., "get" access) to retrieve the client secret from the Key Vault. Ensure that there are no issues with the Key Vault access policies or permissions.

3. Resource URI:

• While you mentioned using https://management.azure.com/.default as the resource URI, typically for Microsoft Graph API, the resource URI should be https://graph.microsoft.com. Double-check if this resource URI is correct for your scenario.

4. Token Acquisition:

• Review the token acquisition process to ensure that the access token is being retrieved successfully and that it includes the necessary claims and information.

5. Logging and Diagnostics:

• Enable detailed logging and diagnostics in Azure Data Factory to capture more information about the authentication process, token acquisition, and any potential errors or issues encountered

6. Test with Other Methods:

• Consider testing the authentication and token retrieval process using other methods (e.g., using Azure CLI, PowerShell, or directly from a programming language) outside of Azure Data Factory to isolate and identify any potential issues.

By systematically reviewing and verifying each step of the authentication and access token retrieval process, you should be able to identify and resolve the issue with the "invalid_token" error. If you continue to encounter issues, consider reaching out to Microsoft Azure support for further assistance and troubleshooting.