Jeroen Van den Broeck

Freelance software developer & consultant, with a focus on Azure Integration Services.

less than 1 minute read

Today was trying to authenticate my Azure Function app with a User Assigned Managed Identity using the newer Azure.Idenity NuGet package.

Quickly I ran into the following error:

Exception while executing function: MyFunction ManagedIdentityCredential authentication failed: No MSI found for specified ClientId/ResourceId.
Status: 400 (Bad Request)

Solution

Add AZURE_CLIENT_ID to the Application settings with the Client ID of the User Assigned Managed Identity as the value:

azure-function-uami

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