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Connecting to MFA enabled Dynamics 365 CRM instance through console application

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Posted on by Priyank Bhavsar 505

Hello Experts,

I'm trying to connect to dynamics 365 CRM instance through console application but getting 'Unable to login to CRM' error.

Here is my code.

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
string connectionString = "AuthType=ClientSecret; url=myorg.crm.dynamics.com; ClientId=b77e2b5a-3946-485e-########; ClientSecret=s.tOrEuew_QTuGxV8Y0v4iTK######;

CrmServiceClient crmServiceClient = new CrmServiceClient(connectionString);
if (crmServiceClient != null && crmServiceClient.IsReady)
{
Console.WriteLine("\nConnection successful.");
}

I performed all the steps mentioned in this link:

https://nemely.com/blog/connect-to-multi-factor-enabled-d365-cds-programmatically-online-9-1/

Thanks,

Priyank

  • Suggested answer
    MMK Profile Picture
    MMK 745 on at
    RE: Connecting to MFA enabled Dynamics 365 CRM instance through console application

    Hi

    for any body who is struggling to connect old Console Application code with MFA Enabled CRM

    To Connect MFA Enabled Dynamics CRM with C# you just need to use App Password instead of your Password remaining every thing remains same as it was

                   string connectionString = GetServiceConfigurationfromAppCOnfig();

                  ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

                  CrmServiceClient conn = new Microsoft.Xrm.Tooling.Connector.CrmServiceClient(connectionString);                

                  _orgService = (IOrganizationService)conn.OrganizationWebProxyClient != null ? (IOrganizationService)conn.OrganizationWebProxyClient : (IOrganizationService)conn.OrganizationServiceProxy;

                  WhoAmIResponse whoAmIResponse = (WhoAmIResponse)_orgService.Execute(new WhoAmIRequest());

    Follow the Steps to generate App password

    community.dynamics.com/.../connecting-to-mfa-enabled-dynamics-365-v9-x-crm-instance-through-c-or-console-app

  • Suggested answer
    Rui Carvalho Profile Picture
    Rui Carvalho on at
    RE: Connecting to MFA enabled Dynamics 365 CRM instance through console application

    Hello Priyank

    You are using WS Trust authentication and that's deprecated.

    docs.microsoft.com/.../authenticate-office365-deprecation

    Try to go with this sample instead:

    docs.microsoft.com/.../sample-simplified-connection-quick-start

    Or you can download the whole sample here:

    github.com/.../QuickStartCS

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