How to fix "azure.core.exceptions.ClientAuthenticationError: (None) Unauthorized. Access token is missing, invalid, audience is incorrect (https://cognitiveservices.azure.com), or have expired" during RAG creation tutorial?

Question

I am trying to follow the steps of the tutorial: https://learn.microsoft.com/en-us/azure/ai-studio/tutorials/copilot-sdk-build-rag

I keep getting the error:

azure.core.exceptions.ClientAuthenticationError: (None) Unauthorized. Access token is missing, invalid, audience is incorrect (https://cognitiveservices.azure.com), or have expired.

Code: None

Message: Unauthorized. Access token is missing, invalid, audience is incorrect (https://cognitiveservices.azure.com), or have expired

I've triple checked my .env file to make sure everything is correct. The code is a direct copy of what is in the tutorial and I've double checked that everything is in the same region. I've tried re-logging into the CLI to make sure it's not that too. The code doesn't specify an api key, which I'm thinking maybe that's what it needs?

Answer 1

Hi Rebecca Molnar,
I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this!

Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others", I'll repost your solution.

Please click "Accept" the answer as original posters help the community find answers faster by identifying the correct answer.

Issue : How to fix "azure.core.exceptions.ClientAuthenticationError: (None) Unauthorized. Access token is missing, invalid, audience is incorrect (https://cognitiveservices.azure.com), or have expired" during RAG creation tutorial?

Resolution :
I had to create an application registration and tie that into my code with the:

AZURE_CLIENT_ID, AZURE_TENANT_ID, AZURE_CLIENT_SECRET

of the application I just registered into the .env file. Once I figured this out, I was able to run the code without issues.

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