Python: Bug: ClientConnectorDNSError when connecting to Azure AI Agent endpoint in Semantic Kernel 1.31.0

[Pavan-Microsoft]

Describe the bug
I have successfully upgraded my semnatic kernel version to 1.31.0, and when trying to run Getting below error:

aiohttp.client_exceptions.ClientConnectorDNSError: Cannot connect to host kmtest2345tsample2-aiservices.services.ai.azure.com:443 ssl:default [getaddrinfo failed]

To Reproduce
Steps to reproduce the behavior:
try to reproduce the following guide: python/samples/getting_started_with_agents/azure_ai_agent/step2_azure_ai_agent_plugin.py

Added below environment variables:
AZURE_AI_AGENT_MODEL_DEPLOYMENT_NAME=gpt-4o-mini
AZURE_AI_AGENT_ENDPOINT=https://.services.ai.azure.com/api/projects/

Added Azure AI Developer role as well

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Platform

• Language: Python 3.11.9
• AI model: GPT-4o-mini
• IDE: VS Code
• OS: Windows

[moonbox3]

Let me ask the Azure SDK team for help on this, and will get back to you ASAP.

[moonbox3]

@Pavan-Microsoft, can you please confirm that your AZURE_AI_AGENT_ENDPOINT is indeed of the form https://<resource>.services.ai.azure.com/api/projects/<project-name> (with project name at the end?).

Also, are you able to use the agent playground inside the Foundry portal in your new project you created?

[moonbox3]

Also, did you create your agent resource on or after May 19th, 2025? Using the latest Azure SDK libraries requires a new Foundry project that supports this Agent service.

[Pavan-Microsoft]

I was previously using an older version of the AIHub project. I'll try using the latest version of the Foundry project. Thanks :)

[moonbox3]

We have this migration guide. I will add a link to the Foundry's docs explaining how to make sure one is creating/using the latest project (with an endpoint). https://learn.microsoft.com/en-us/semantic-kernel/support/migration/azureagent-foundry-ga-migration-guide?pivots=programming-language-python

[Pavan-Microsoft]

Thanks! I’ll try this out and raise an issue if I run into anything else.