Connect to Multi-factor Enabled D365 CDS Programmatically (Online 9.1)

As per Microsoft announcement, use of the WS-Trust authentication security protocol when connecting to Common Data Service is no longer recommended and has been deprecated; see the announcement here.

Note: This change only impacts client applications that connect to the Common Data Service. It does not impact custom plug-ins, workflow activities, or on-premises/IFD service connections.

Also, nowadays more and more organizations are focusing towards security and hence they have enabled Multi-factor Authentication.

In all, there is a need to connect to D365 CDS using a more robust and latest way. We will use capabilities of Azure Active Directory here.

Step 1 : Get Application ID and Client Secret Key using Azure Active Directory

  • Connect to Azure Admin Portal
    Login to
    Click on Azure Admin Directory
    Click on App Registrations
    Click on New registration
  • Give an appropriate name of your app which is going to connect to D365 CDS programmatically. Click Register.
    Copy generated Application ID
Trial Application
Trial Application
  • Now click on Certificates and Secrets for your app.
    Click on ‘New Client Secret’, add description and expiry details.
    Once added, copy ‘Client Secret Key Value’.

Step 2 : Add Application User in D365 CDS Environment

  • Login to D365 CDS environment.
  • Go to Settings –> Security –>Users.
  • Change the view to ‘Application Users’ and click New. Make sure the form is ‘Application User’ form.
  • Add details and Application Id generated in step 1 above.
  • Assign appropriate Security role to this Application User as per your organization’s security set up.

Step 3: Add connection string in your c# code as follows:

String connectionString = “AuthType=ClientSecret; url=<your organization URL>; ClientId=<your application id>; ClientSecret=<client secret key>”;

string connectionString = “AuthType=ClientSecret; url=; ClientId=40c95818-9306-437a-85c1-0db96ba277ae; ClientSecret=~s5~KXUMoT-L5dFXg21IutB18-EsD0hoi-“;

Code Snippet: (Change values as per your organization set up values)


Hope this helps to achieve your goal. Please share your comments.

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