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PODynamics CRM - Caller not authenticated to service
 

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    <p>I have an MVC4 Web Application on Web Server A that is consuming the Dynamics CRM Web Service using the OrganizationServiceProxy, which is on Web Server B. The MVC4 application is setup with ASP .NET Impersonation and Windows Authentication enabled. When I call the WhoAmI I get an error:</p> <p>'The caller was not authenticated by the service.'</p> <p>Now if I move the MVC4 Application to Web Server B (same as CRM) with the same Authentication as it had on Web Server A it calls WhoAmI without an exception.</p> <p>Here is the code being used to connect to the server.</p> <pre><code> string serviceURL = ConfigurationManager.AppSettings["CRMROOTURL"].ToString() + "XRMServices/2011/Organization.svc"; this.CRMService = GetCRMService(serviceURL); private OrganizationServiceProxy GetCRMService(string serviceURL) { ClientCredentials credentials = new ClientCredentials(); credentials.Windows.ClientCredential = CredentialCache.DefaultNetworkCredentials; OrganizationServiceProxy client = new OrganizationServiceProxy(new Uri(serviceURL), null, credentials, null); return client; } </code></pre> <p>Here is a screenshot of the authentication on the IIS Web Site.</p> <p><img src="https://i.stack.imgur.com/RBSTN.png" alt="enter image description here"></p> <p>Per the correct answer I just wanted to provide some snippets to help anyone else. </p> <pre><code>string loggedUser = System.Security.Principal.WindowsIdentity.GetCurrent().Name; ClientCredentials credentials = new ClientCredentials(); credentials.Windows.ClientCredential = new NetworkCredential(username, password, domain); OrganizationServiceProxy client = new OrganizationServiceProxy(new Uri(serviceURL), null, credentials, null); client.ClientCredentials.Windows.ClientCredential = credentials.Windows.ClientCredential; // -- Retrieve the user. QueryExpression expression = new QueryExpression { EntityName = "systemuser", ColumnSet = new ColumnSet("systemuserid") }; expression.Criteria.AddCondition("domainname", ConditionOperator.Equal, loggedUser); EntityCollection ec = client.RetrieveMultiple(expression); if (ec.Entities.Count &gt; 0) { // -- Impersonate the logged in user. client.CallerId = ec.Entities[0].Id; } </code></pre> <p>Thanks!</p>
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    1. COIs the Application Identity of the Application Pool that hosts the MVC4 Web Application different between the two servers?
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    2. COThey are currently different from one another. Should I make them the same and try that?
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    3. CO`GetCRMService` really isn't helpful. I need to see the code where the constructor of the OrganizationServiceProxy is called, and more importantly, what credentials you're passing to it, and how the credentials are getting instantiated.
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