I have configured the postman environment successfully, I am able to generate App only access token but while generating access token this is showing the subjected error! I checked credentials, client id, secret all are correct!

Can you please provide more details - what endpoint you are hitting, what scope you are using, whether the application is a single tenant or multi-tenant and if you are using a client credentials grant then grant_type should be set to client_credentials . You can refer to blog to setup client credentials flow using Postman. Also, Client credentials documentation for details.

GET USER ACCESS TOKEN- POSTMAN "error": "invalid_grant"

Accepted answer

Saurabh Sharma 23,826 Reputation points Microsoft Employee

2020-06-12T18:29:17.077+00:00

Can you please provide more details - what endpoint you are hitting, what scope you are using, whether the application is a single tenant or multi-tenant and if you are using a client credentials grant then grant_type should be set to client_credentials.
You can refer to blog to setup client credentials flow using Postman. Also, Client credentials documentation for details.
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AYUSH SHARMA 21 Reputation points

2020-06-13T04:09:46.99+00:00

Thank you, grant_type was set as password, I change it accordingly but getting "Authorization_RequestDenied" while accessing this token for MS graph [https://graph.microsoft.com/v1.0/me]

"error": {
"code": "Authorization_RequestDenied",
"message": "Insufficient privileges to complete the operation.",
"innerError": {
"date": "2020-06-13T04:05:55",
"request-id": "5ebf79fe-58e2-4a10-b79c-76ccba982ca5"
}
}

Saurabh Sharma 23,826 Reputation points Microsoft Employee

2020-06-18T23:31:37.337+00:00

@SharmaAyushNokiaINGurgaon-5163 Can you please make sure that you have granted an Admin consent if require for any of the Graph API permissions added to your application. (screenshot below).

Also, refer to the documentation - Authentication and authorization basics for Microsoft Graph
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