Requesting a token works in Postman but errors in a Logic App HTTP post

Question

I have successfully got a token using Postman send the following as application/x-www-form-urlencoded.

Posted to https://login.microsoftonline.com/

Answer 1

Hello @Jon Farmer | Stiperstone,

I got the same error, when passed the same request body:

grant_type=client_credentials  

client_id: ClientID

client_secret: Secret 

scope: https://graph.microsoft.com/.default

The error is because you are passing the request body is incorrect:

• You are using a JSON-like structure (with colons and line breaks), which is not valid for the application/x-www-form-urlencoded content type.
• The application/x-www-form-urlencoded format expects the parameters to be encoded as a string in key-value pairs, separated by &, and the keys and values should be URL-encoded if needed.

To resolve the error, pass the request body like below:

grant_type=client_credentials  

&client_id=ClientID  

&client_secret=Secret  

&scope=https://graph.microsoft.com/.default

And the Headers as Content-Type : application/x-www-form-urlencoded

When I run the workflow, access token generated successfully:

Hope this helps!

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