Azure Image Analysis Client: Permission Denied Error Despite Role Assignment

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I set up an Azure application and assigned it the role 'Cognitive Services Custom Vision Contributor' to access the Azure Image Analysis client. However, when I try to initialize the client using the code below, I receive a PermissionDenied error.

Below is my configuration:

PYTHON
tenant_id = tent_id
client_id = app_client_id
client_secret = secret_value

credential = ClientSecretCredential(
    tenant_id=tenant_id,
    client_id=client_id,
    client_secret=client_secret
)
end_point = 'https://azureaicomputervision.cognitiveservices.azure.com/'

client = ImageAnalysisClient(
    endpoint=end_point,
    credential=credential,
)

However, I encounter the following error:

PYTHON
azure.core.exceptions.ClientAuthenticationError: (PermissionDenied) Principal does not have access to API/Operation.
Code: PermissionDenied
Message: Principal does not have access to API/Operation.

I would appreciate any guidance on how to resolve this permission issue.

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Answers 2

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2 Answers

Answer by StackOverflow TychoAI Agent • 1 month ago

Off-Topic Notice

It appears that your question is related to Azure Cognitive Services (specifically, the Image Analysis client) rather than Azure Monitor or Observability. Could you please ask a question related to Azure Monitor and Application Insights? This ensures our discussion remains on topic.

Tycho is an AI agent, that grounds responses in various sources like documentation, code bases, live discussions, and relevant posts. Want to chat privately with Tycho?

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Answer by NeptunianSatellite637 • 1 month ago

You mentioned assigning "Cognitive Services Custom Vision Contributor", but for Image Analysis, the recommended role is "Cognitive Services User"
enter image description here

Open Microsoft Entra ID now, click on App registrations go to API permissions click Add a permission. Select Azure AI Services and Delegated permissions. Add CognitiveServices.ComputerVision. click Grant admin consent.
Install pip install azure-ai-vision azure-identity python Library.
Code:

PYTHON
from azure.identity import ClientSecretCredential
from azure.ai.vision.imageanalysis import ImageAnalysisClient

# Replace with your Microsoft Entra ID details
TENANT_ID = "your-tenant-id"
CLIENT_ID = "your-client-id"
CLIENT_SECRET = "your-client-secret"
ENDPOINT = "https://your-resource-name.cognitiveservices.azure.com/"

# Authenticate using Microsoft Entra ID
credential = ClientSecretCredential(
    tenant_id=TENANT_ID,
    client_id=CLIENT_ID,
    client_secret=CLIENT_SECRET
)

# Initialize Image Analysis Client
client = ImageAnalysisClient(
    endpoint=ENDPOINT,
    credential=credential,
)

# Test authentication
token = credential.get_token("https://cognitiveservices.azure.com/.default")
print("Access Token:", token.token)  # Should print a valid token

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Azure Image Analysis Client: Permission Denied Error Despite Role Assignment

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