Get Client Access Token for Face API fail with code Unspecified?

Question

I can not get access token using this API GET {endpoint}/face/{apiVersion}/settings/getClientAssetsAccessToken to fetch https://github.com/Azure/AzureAIVisionFaceUI . It return a response like this {"error":{"code":"Unspecified","message":"Internal server error"}}
I can get it before but It is not working since 04/09/2026

Answer 1

Hi @SHOUMIK CHAKRAVARTY ,
I double check again and all of my setup is correct others API still work fine only the https://learn.microsoft.com/en-us/rest/api/face/liveness-session-operations/get-client-assets-access-token fail.
As I research there are some people are facing the same problem with me. It seem like there something went wrong with the API. Please take a look from your side because it is quite blocking our process right now.

Thanks and Best Regard

Answer 2

You are calling the Get Client Assets Access Token API: https://learn.microsoft.com/en-us/rest/api/face/liveness-session-operations/get-client-assets-access-token

This endpoint is part of the Face Liveness Session Operations API surface and is used to obtain a Client Assets Access Token for accessing client AI model assets. It requires the Ocp-Apim-Subscription-Key header.

Since you are receiving an internal server error, first make sure you are calling the API with the correct contract. You should verify:

the exact endpoint format

the API version you are using

the subscription key being sent

The documented path is:

GET {endpoint}/face/{apiVersion}/settings/getClientAssetsAccessToken

If the contract and version are correct and the error persists, you’ll need to open a support ticket so Microsoft can check the backend logs for your region.

How to open a Microsoft Azure support ticket

You can open a support ticket directly from the Azure Portal:

1. Go to Azure Portal Open https://portal.azure.com Sign in with the account that owns your Face resource and confirm the correct subscription.

2. Open “Help + Support” Left sidebar → Help + Support (or search for it using the top search bar)

3. Create a new support request Click Create a support request Choose Technical issue Select your subscription and your Face resource.

4. Select the service: Azure AI Services → Face This routes the ticket to the correct engineering team. For problem type, choose Liveness Session Operations or Client Assets Access Token if available.

5. Describe the issue clearly Include:

• The endpoint: GET /face/{apiVersion}/settings/getClientAssetsAccessToken

The exact error: {"error":{"code":"Unspecified","message":"Internal server error"}}

The date it started (e.g., April 9, 2026)

Your resource region (e.g., West US, East US, etc.)

6. Submit the ticket Microsoft Support will follow up through email and the Azure Portal. They may request your resource name or correlation IDs.

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