Unable to access the dag.yaml file with original storage location

Question

I am trying to access the prompt flow created in Azure AI foundry project, provisioning all the necessary permissions as per the documentation including CORS, yet I get the below error.
"Authentication Failed

Unable to access the dag.yaml file with original storage location at Users/test/promptflow/Chat with Wikipedia-test/flow.dag.yaml. Please check the storage setting."

I have tried switching the storage account access to identity based. I have tried tweaking network settings, etc. Nothing seems to address the issue.

Any suggestions would be really appreciated.

Answer 1

Hi manideep karnati,

Welcome to Microsoft Q&A Forum, thank you for posting your query here!

Please check on below areas .

1. Storage role and permission: See if you are able to access datastore holding the prompt flow and update authentication with update keys if needed. Please select the role storage blob DATA contributor & then, role Storage File Data Privileged Contributor; add member for the identity you want to grant access.
2. Storage firewall configuration
   1. Add your public ip or virtual network from storage firewall. Add your ML studio as trusted resource from trusted resource instance. Additional check DNS resolution is happening to private IPs mentioned in storage private endpoint/DNS configuration. DNS troubleshooting
3. CORS Policy: Please go to resource sharing in storage account file tab and add below origins and methods. - Allowed origins: https://mlworkspace.azure.ai,https://ml.azure.com,https://*.ml.azure.com,https://ai.azure.com,https://*.ai.azure.com,https://mlworkspacecanary.azure.ai,https://mlworkspace.azureml-test.net - Allowed methods: DELETE, GET, HEAD, POST, OPTIONS, PUT

Flow missing

authentication failed while creating promptflow

Thank you.