How to use App Insights with Prompt Flow

Question

I'm working on implementing a new flow using Azure Prompt Flow in VSCode, and I'm trying to have the insights displayed in App Insights. Currently I have:

An .env file inside the project and inside the file I have this:

APPLICATIONINSIGHTS_CONNECTION_STRING="
InstrumentationKey=KEY1;IngestionEndpoint=KEY2;LiveEndpoint=K3;ApplicationId=KE4"

But when I run the project on VSCode, I'm getting the messages:

• No connection string detected, app insight metric exporter is disabled.
• No connection string detected, app insight trace exporter is disabled.
• No connection string detected, app insight log exporter is disabled.

Do you have any idea of what it could be the problem? Thanks in advance.

Answer 1

Hi ,

Thanks for reaching out to Microsoft Q&A.

It looks like your Azure Application Insights connection string isn't being detected correctly by your Prompt Flow environment in VSCode. Here are some troubleshooting steps to resolve the issue:

1. Ensure the .env file is being loaded

• Check that your .env file is in the root of your project.
• Restart VSCode to ensure environment variables are loaded.
• If using a virtual environment, activate it before running the script.

2. Verify the format of the .env file

Make sure there are no syntax errors in your .env file. It should be formatted like this:

APPLICATIONINSIGHTS_CONNECTION_STRING="InstrumentationKey=KEY1;IngestionEndpoint=KEY2;LiveEndpoint=K3;ApplicationId=KE4"

3. Check how environment variables are loaded in your script

If you're running a Python script, ensure you are loading environment variables properly using dotenv:

from dotenv import load_dotenv import os load_dotenv() # Load variables from .env print(os.getenv("APPLICATIONINSIGHTS_CONNECTION_STRING")) # Debugging step

If the output is None, then the .env file is not being read correctly.

4. Explicitly set the environment variable

Try setting the variable manually in your terminal before running VSCode:

export APPLICATIONINSIGHTS_CONNECTION_STRING="InstrumentationKey=KEY1;IngestionEndpoint=KEY2;LiveEndpoint=K3;ApplicationId=KE4"

5. Verify Prompt Flow configuration

Check if the connection string is being set correctly within your Prompt Flow setup. If Prompt Flow expects a different variable name or configuration file, adjust accordingly.

• If using the integrated terminal, make sure it's using the same environment as your Prompt Flow execution.
• Restart VSCode and retry.

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