Create CrmServiceClient with AuthType=OAuth

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Posted on by Thomas Van Dyck

Hello everybody

I am trying to create an API that gets information from our D365 CRM environment in the cloud. I followed the instructions on https://docs.microsoft.com/en-us/powerapps/developer/common-data-service/xrm-tooling/use-connection-strings-xrm-tooling-connect to create a connection string with AuthType=OAuth (because Office365 is deprecated) but I can't seem te create a new CrmServiceClient.

My code...

ConnectionString:

<add name="CdsConnection" connectionString="AuthType=OAuth;Username=myusername;Password=mypassword;Url=">kdg.crm4.dynamics.com;AppId=51f81489-12ee-4a9e-aaae-a2591f45987d;RedirectUri=app:/.../58145B91-0C36-4500-8554-080854F2AC97;LoginPrompt=Auto" />

Creating of the CrmServiceClient:

crmSvc = new CrmServiceClient(ConfigurationManager.ConnectionStrings["CdsConnection"].ConnectionString);

Result: crmSvc gets created, with a lot of errors in it.

CurrentAccessToken = 'crmSvc.CurrentAccessToken' threw an exception of type 'System.NullReferenceException'
EnvironmentId = 'crmSvc.EnvironmentId' threw an exception of type 'System.MissingMethodException'
LastCrmError = "Unable to connect to CRM: Methode niet gevonden: System.String Microsoft.Xrm.Sdk.Organization.OrganizationDetail.get_EnvironmentId().
Methode niet gevonden: System.String Microsoft.Xrm.Sdk.Organization.OrganizationDetail.get_EnvironmentId().Unable to Login to Dynamics CRM
Unable to Login to Dynamics CRMOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is null************ NullReferenceException - WhoAmI : Execute (WhoAmI) request to CRM from IOrganizationService |=> De objectverwijzing is niet op een exemplaar van een object ingesteld.
De objectverwijzing is niet op een exemplaar van een object ingesteld.[TerminalFailure Failed to Execute Command - WhoAmI : RequestID=8f8bbada-fcd6-473d-a56d-a3ee180bab15 : Execute (WhoAmI) request to CRM from IOrganizationService duration=00:00:00.0036163 ExceptionMessage = De objectverwijzing is niet op een exemplaar van een object ingesteld.
De objectverwijzing is niet op een exemplaar van een object ingesteld.Failed to Executed Command - WhoAmIRequest : RequestId=8f8bbada-fcd6-473d-a56d-a3ee180bab15 : total duration: 00:00:00.0066912
Failed to Executed Command - WhoAmIRequest : RequestId=8f8bbada-fcd6-473d-a56d-a3ee180bab15 : total duration: 00:00:00.0066912************ Exception - Failed to lookup current user
De objectverwijzing is niet op een exemplaar van een object ingesteld.OrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is nullOrganizationWebProxyClient is null
OrganizationWebProxyClient is null'
LastCrmException = {"OrganizationWebProxyClient is null"}
TenantId = 'crmSvc.TenantId' threw an exception of type 'System.MissingMethodException'

I've tried many changes in the meantime, but can't seem to figure out what is going on. Has anyone out there have got an idea?

Thanks in advance!

Kind regards
Thomas Van Dyck

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Answers (1)

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Pradeep Rai 5,487 Super User 2025 Season 1 on at

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RE: Create CrmServiceClient with AuthType=OAuth

Hi Peter Forsbom,

As you know we can setup the redirect URI while registering App on Azure and same URI we can use in console.

But for development purpose Microsoft give predefine URI as shown below:

So, you can use the same.

For complete guide refer below link,

https://docs.microsoft.com/en-us/powerapps/developer/data-platform/xrm-tooling/use-connection-strings-xrm-tooling-connect

Thanks,

Pradeep.
PeterForsbom 9 on at

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RE: Create CrmServiceClient with AuthType=OAuth

Hi

May I ask just how you configure the connections string. I know where to get the AppId but how do I create the RedirectUri with the format "app://{where is this GUID coming from?}"
Community Member on at

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RE: Create CrmServiceClient with AuthType=OAuth

Hello All,

As per latest Microsoft recommendation we are not supposed to use “AuthType=Office365”.

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

We can use Application Account (Client ID & Secret Key) to generate Token & access Dynamics CRM Organization Service. But if you want to use User ID & PWD then Use (AuthType = OAuth)

Sample Code :

string connectionString = "AuthType = OAuth; Url = 'https://*****.crm.dynamics.com'; Username = '*******'; Password = '*******'; AppId = 51f81489-12ee-4a9e-aaae-a2591f45987d; RedirectUri = app://58145B91-0C36-4500-8554-080854F2AC97;LoginPrompt=Never";

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

CrmServiceClient crmServiceClient = new CrmServiceClient(connectionString);

WhoAmIResponse whoAmIResponse = crmServiceClient.Execute(new WhoAmIRequest()) as WhoAmIResponse;

Note : While trying to use this from Azure Function I got below errors :

1) ERROR REQUESTING Token FROM THE Authentication contextNeed a non-empty authority

2) One or more errors occurred. => An error occurred while sending the request. => The underlying connection was closed: An unexpected error occurred on a send. => Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. => An existing connection was forcibly closed by the remote hostERROR REQUESTING Token FROM THE Authentication context

3) CurrentAccessToken = 'crmServiceClient.CurrentAccessToken' threw an exception of type 'System.NullReferenceException'

Easily you can resolve these using just one additional line : ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

Ref URL : support.microsoft.com/.../4051700

Microsoft Dynamics 365 Customer Engagement (online) to require TLS 1.2 for connectivity

Pls let me know if you are facing any other issues.

Thanks,

Sumit
Thomas Van Dyck 22 on at

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RE: Create CrmServiceClient with AuthType=OAuth

Thanks for your reply Bipin Kumar. Your code was really helpfull for me to understand what was going on exactly!
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Bipin D365 28,981 Moderator on at

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RE: Create CrmServiceClient with AuthType=OAuth

Hi,

I have just tried from my console application with same configuration as yours and for me it is working.

Check xrm.tooling dll version - 9.0.2.23

check .net framework

I have placed my console working code at below github url. you can replace your credential and try that.

github.com/.../WorkWithCsharp

If found helpful, Please mark my answer verified.