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Getting error from APIM while calling a simple health check API after enabling JWT validation

2026-01-29T08:10:06.81+00:00

I have created an App registration for my APIM with the required configurations such as Exposing API, Application ID Uri is noted and also added custom App Roles

Then i have created a Client App registration providing the right permission to APIM App including the role

I have configured the APIM by following below steps

·       Navigate to APIMà API à Operations where the JWT token validation to be implemented

·       Click Design and Go To Inbound Processing

·       Click Add Policy à Click Validate JWT

·       Give following values

o   Header name as Authorization

o   Failed validation HTTP Code as 401-UnAuthorized

o   Failed Validation Message as Login Failed

·       Audience à Add Audience à Use the Application ID Uri created for the app (Az-GERNAS-APIM-APP) in the Step Number 7 of section 1

·       Add Required Claims à Name as aud, Match as Any Claim, Value à Click + and add same Uri value for the app (Az-GERNAS-APIM-APP) in the Step Number 7 of section 1

·       Add Open ID URL’s and give login URL with FAB tenant Id which is

·       Click Save

Issue is - After generating the token by using Client ID, Client Secret, Role - I am getting the custom error from APIM


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Microsoft Security | Microsoft Graph
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