Function App "Not Found" error in Logic App

Question

Issue: Azure Function “Not Found” Error in Azure Logic App

I’m encountering an issue where an Azure Function, which is called within an Azure Logic App, is returning a “Not Found” error. The Logic App was previously able to invoke the Function without any problems, and the Function App itself is still available and functioning. Additionally, the Function App can be accessed without issue from within the Logic App configuration.

This error appeared suddenly, from one day to the next, with no apparent changes made to the configuration. Prior to this, everything was working perfectly.

Does anyone have any insight into what could be causing this issue, or suggestions on how to resolve it?

Answer 1

Hello @Sascha Müller

This error can occur due to various reasons such as incorrect URL, incorrect function name, incorrect function key, or incorrect authentication settings. To resolve this issue, you can try the following steps:

1. Check the URL of the Azure Function in the Logic App to ensure that it is correct and matches the URL of the Function App.
2. Check the name of the Azure Function in the Logic App to ensure that it is correct and matches the name of the Function App.
3. Check the function key of the Azure Function in the Logic App to ensure that it is correct and matches the function key of the Function App.
4. Check the authentication settings of the Azure Function in the Logic App to ensure that they are correct and match the authentication settings of the Function App.
5. If none of the above steps resolve the issue, you can try redeploying the Azure Function and updating the Logic App to use the new URL and function key.

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