How to connect to App Configuration from Azure Function with User Managed Identity

Question

Hi,

I have set up a user managed identity for several Azure Functions to access some resources, in particular App Configuration. However, I am getting access errors, while switch to System Managed Identity everything is working fine.

Any changes I need for using User Managed Identity instead of System Managed Identity?

Thanks a lot!

Answer 1

Thanks for posting your question in the Microsoft Q&A forum.

You need to make a few specific changes compared to using a System-Assigned Managed Identity.

• Assign the User-Assigned Managed Identity to the Function App
• For User-Assigned Managed Identities, you need to set a special property called keyVaultReferenceIdentity on the Function App
• Ensure that the User-Assigned Managed Identity has the necessary RBAC permissions to access the App Configuration

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