C# Dynamics Nav WebService unable to get authorization

Question

Im developing a project that calls multiple methods of web services from Dynamics Nav. It uses a SOAP request and sends an response xml to do the call.

I'm unable to authenticate to the web service as I get the following response:

response {StatusCode: 401, ReasonPhrase: 'Unauthorized', Version: 1.1, Content: System.Net.Http.StreamContent, Headers: { Date: Thu, 31 Aug 2017 08:12:15 GMT Server: Microsoft-HTTPAPI/2.0 WWW-Authenticate: Negotiate Content-Length: 0 }} System.Net.Http.HttpResponseMessage

My sample of credentials code is:

var credentials = Encoding.ASCII.GetBytes(usuarioText + ":" + passText);
client.DefaultRequestHeaders.Authorization = new 
    AuthenticationHeaderValue("Windows", Convert.ToBase64String(credentials));

I need windows authentication for calling the nav service, I think I'm doing something wrong sending the credentials...

Macfox Macfox · Accepted Answer · 2017-10-25T19:09:34

If the Service Tier is configured to use Windows Authentication, there are two ways to Authentication against Dynamics NAV Web Service.

Using your current Credentials:

// Creates instance of service and sets credentials.
Customer_Service service = new Customer_Service();
service.UseDefaultCredentials = true;

Or setting Credentials (e.g. from Config):

// Creates instance of service and sets credentials.
Customer_Service service = new Customer_Service();
service.UseDefaultCredentials = false;
service.Credentials = new NetworkCredential("username", "password", "domain");

More at MSDN: Walkthrough: Registering and Using a Page Web Service (SOAP)

C# Dynamics Nav WebService unable to get authorization

1 Answers