Encountered an error "Failed to get the list of workspaces"

Question

Hi Team,

I’m encountering the error “Failed to get the list of workspaces” after logging into my account at https://ml.azure.com/.

Could you please help identify the issue?

Regards!

Trinh Tran

Answer 1

Hi Trinh Tran,

Thanks for reaching out to Microsoft Q&A.

The error "Failed to get the list of workspaces" with the message PassthroughTokenValidationFailed: Token validation failed typically occurs due to a misconfiguration or permission issue with the Azure Machine Learning service.

Here are the common causes and solutions for this issue:

1. Insufficient Permissions:
   • Ensure your Azure account has the correct permissions to access the workspaces.
   • Check that your user account has at least the Contributor role assigned on the subscription or resource group that contains the Machine Learning workspaces.
   • Verify that you are added as a user in the Azure Machine Learning workspace.
2. AAD Issues:
   • If you are using a service principal or Managed Identity to authenticate, confirm that it has access to the Azure Machine Learning workspace and the proper role assignment.
   • Check that the AAD token is not expired. Logging out and back into the portal may help refresh your token.
3. Tenant or Subscription Context Issue:
   • Ensure you are logged into the correct Azure tenant or subscription that contains the workspaces.
   • If you manage multiple tenants, verify that you have switched to the correct directory from the Azure portal or CLI using: az account set --subscription <subscription-id>
4. Region-Specific or Service Principal Token Issues:
   • Check the Azure region where your workspaces are hosted. If you are accessing a workspace in a region-specific configuration, ensure that the token you are using is valid for that specific region.
5. Browser Caching or Network Problems:
   • Clear your browser cache and cookies, then log back into the portal.
   • If using a VPN, ensure it does not block access to the Azure Machine Learning resources.
6. Resource Provider Registration:
   • Verify that the required Azure resource providers are registered in your subscription. Run the following command in Azure CLI: az provider register --namespace Microsoft.MachineLearningServices
7. Azure Role Assignments:
   • Verify if there is a mismatch between your Azure role and the workspace access level. Go to Azure Portal > Subscription > Access Control (IAM) and ensure the role assignments are appropriate.
8. Browser Debugging:
   • Open the developer tools in your browser (ex: F12 in Chrome or Edge) and check the network logs for more details about the error.

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Answer 2

Hi,

The issue occurs after I complete the registration and log in again. I suspect it might be due to “Insufficient Permissions” but where and how can I check this?

Regards,

Trinh Tran