Getting 401 Unauthorized error in web api on Azure VM

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Posted on by Michal Kosicki

Hi
I am trying to test my custom web service in postman, before using it in the Power Apps but unfortunatelly I get 401 Unauthorized error when trying to do the call the POST request.

I did everything as shown in this tutorial: https://dynamics365musings.com/create-a-custom-service-in-d365/ including the token part.

My d365 enviroment is set on Azure Virtual Machine and this is the respond of the invoke in Event Viewer on the VM:

I also added Api permisions in Azure App:

PS:It is my first post, so please excuse me for any inconveniences :)

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Hi Michal,

You can refer the following link to try to fix the error:

https://nishantrana.me/2020/12/16/fixed-401-unauthorized-error-while-calling-dynamics-365-web-api/

And you can refer the following link--Setup Postman to connect to Dynamics 365 CRM using OAuth 2.0 | Azure App Registration:

d365demystified.com/.../

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