Error handling for wrong instrumentation in azure app Insights

Question

I'm using Azure app Insight in my app. I want to handle an error case where if we provide the wrong instrumentation key in the appinsights.js file which is used for configuration.
Currently, appInsights doesn't throw any error but only data tracking is disabled and a post request to (https://dc.services.visualstudio.com/v2/track) gets failed with 400 error.

I want to catch this error from react side and display some appropriate message such as "Please Enter correct instrumentation key"

Answer 1

Hi @pavan karnalkar

Welcome to Microsoft Q&A! Thanks for posting the question.

This is by design that the app insights sdk silently no-ops when given an invalid instrumentation key. One of the ways, to ensure that the configuration is correct, is to view "Live Metrics" which has a delay of 1 seconds after configuring the application. If you see data coming in for the requests made to the application, it will mean that the key is correct.

I will also reach out to the team and update this thread if I get additional information on this topic. Please let me know if you have any questions.

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