Dynamic CRM 365 Web API Access Denied using Postman

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Posted on by Community Member

Hi!

I am really new to CRM and getting the right authentication for Web API is making me crazy. I have search bunch of blogs and tutorial for getting Client ID, Client Secret and Access Token through Microsoft Azure. I must say I get those without a problem.

Now, I am trying to GET data from CRM and I do not know what I am doing wrong. I used the Access-token I received as you can see on the screencast above but I am getting 401 Unauthorized (Access Denied) error. Please refer below.

Any help will be appreciated. Thank you.

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Aric Levin - MVP 30,190 Moderator on at

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It seems like you are getting an Azure Authorization token and not the CRM Authorization token.

Do you have the proper delegation in Azure to authenticate against CRM?

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Community Member on at

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Hi Aric! I am very new to CRM and just registered my CRM to Azure yesterday so I do not know there is a difference on tokens. Would you mind to share on how to make sure I am getting which token ?

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Nithya Gopinath 17,078 on at

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Hi,

Please go through the links below on connecting Dynamics CRM through Postman.

carldesouza.com/connecting-dynamics-crm-postman

dynamicscrmcoe.com/test-microsoft-dynamics-crm-web-api-postman

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Velimir 5 on at

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I faced the same issue. The problem is in generated token, in most of the blogs and tutorials the instructions are to use authorization Url

login.windows.net/common/oauth2/authorize

you need to append resource parameter in that url

login.windows.net/common/oauth2/authorize?resource=https://********.dynamics.com/

where "https://********.dynamics.com/" is your crm url

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