ntml windows is work,linux not work

[sibo-git]

Describe the bug
The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication header received from the server was 'Negotiate, NTLM'.

To Reproduce

public void InitService(string ewsUrl, string username, string password, string domain)
{

   BasicHttpBinding binding = new BasicHttpBinding(BasicHttpSecurityMode.Transport)
   {
       MaxReceivedMessageSize = 65536,
       Security =
       {
           Transport = new HttpTransportSecurity
           {
               ClientCredentialType = HttpClientCredentialType.Ntlm
           }
       },
       UseDefaultWebProxy = false
   };

   EndpointAddress endpoint = new EndpointAddress(new Uri(ewsUrl));


   ExchangeServicePortTypeClient client = new ExchangeServicePortTypeClient(binding, endpoint);
   
   client.ClientCredentials.UserName.UserName = username;
   client.ClientCredentials.UserName.Password = password;

   _ExchangeServicePortTypeClient = client;
}

await _ExchangeServicePortTypeClient.CreateItemAsync(request);
```
`

**Expected behavior**
The service should successfully authenticate with NTLM and process the request.

[HongGit]

WCF Client just pass the credentials to HttpClientHandler using CredentialCache for NTLM scheme. Any issues not working is something for runtime team to investigate, pass to .NET runtime.

[wfurt]

.NET depends on OS implementation. For Linux you will need gss-ntlmssp package installed. What distribution and .NET version do you use @sibo-git?

[sibo-git]

WSL ubuntu22.04 net8.0,and apt install gss-ntlmssp ok。

[sibo-git]

WCF Client just pass the credentials to HttpClientHandler using CredentialCache for NTLM scheme. Any issues not working is something for runtime team to investigate, pass to .NET runtime.

WSL net8.0,and apt install gss-ntlmssp not ok。

[ManickaP]

Problem's been figured out, closing.

[sibo-git]

Sorry, due to my oversight, I mistakenly described it as successful. In fact, I am still failing, even though I have already installed gss-ntlmssp.

[ManickaP]

So could you try on a normal ubuntu install (can be VM in Hyper-V, but not WSL)? What version of WSL are you using? Is it working / not working on a different machine? What version of .NET are you using?

And lastly, could you do a packet capture (wireshark) and share it?

[dotnet-policy-service]

This issue has been marked needs-author-action and may be missing some important information.

[wfurt]

how do you set domain name @sibo-git ? It still may be worth to try simple repro without WCF ... just to be sure.