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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / Dynamic CRM 365 Web AP...
Microsoft Dynamics CRM (Archived)

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. 

postman1.png

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. 

postman2.png

Any help will be appreciated. Thank you. 

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I have the same question (0)
  • Aric Levin - MVP Profile Picture
    Aric Levin - MVP 30,190 Moderator on at
    RE: Dynamic CRM 365 Web API Access Denied using Postman

    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?

  • Community Member Profile Picture
    Community Member on at
    RE: Dynamic CRM 365 Web API Access Denied using Postman

    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 ?

  • Suggested answer
    Nithya Gopinath Profile Picture
    Nithya Gopinath 17,078 on at
    RE: Dynamic CRM 365 Web API Access Denied using Postman

    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

  • Suggested answer
    Velimir Profile Picture
    Velimir 5 on at
    RE: Dynamic CRM 365 Web API Access Denied using Postman

    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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