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Questions tagged [negotiate]

The Negotiate HTTP authentication scheme is defined in RFC 4559.

If a server receives a request for a protected resource it responds with status 401 Unauthorized and a WWW-Authenticate: Negotiate header. The client reissues the original request with a WWW-Authenticate: Negotiate [gssapi-data] header. The server uses the gssapi-data to attempt to authenticate the client; if successful the request continues and a 2xx response can also carry a WWW-Authenticate response header containing the final leg of an authentication.

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SignalR Error! signalr/negotiate gets a "403 - Forbidden: Access is denied." error

I have a .net core web application with signalR elements which works pretty fine locally. When I publish the application on my host (windows server, plesk, .net framework 4.8), I get an error as follows: Error Backend using System; using…
morteza davari
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SignalR working on Localhost, BUT not working on Server win server 2019 with IIS

I have project with SignalR + MVC, this not working on Server win server 2019 with IIS. I Got errors: signalr/negotiate?clientProtocol=2.1&connectionData=%5B%7B"name"%3A"feedbackhub"%7D%5D&_=1646730379815 Can anybody help me? This all my…
duc14s
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.NET HttpClient do not persist authentication between reqeusts to IIS when using NTLM Negotiate

IIS site configured to use windows authentication with default options. The client is written in C# and uses single HttpClient instance to perform requests. Requests success, but every request triggers 401 Challenge: Traffic captured with…
Pavel
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Can I avoid http challenge response?

We are using HttpClient to contact REST-services, which we know require NTLM or Negotiate authorization. The problem is that HttpClient will first contact the service with no authorization (is that called challenge-response?). Client is rejected by…
Torben Nielsen
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Is the default default SPN for a WCF Client `host/myhostname` or `http/myhostname` and why?

Due to this question the default behavior when no identity is specified is host/myhostname. However this seems not totally true. I have a SOAP WCF Service (it's a Dynamics NAV Webservice but this should not matter for the following since the…
Lux
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How to expose WCF service with Basic and Windows authentication options, so Negotiation works

Some clients need to be able to connect to our WCF SOAP services using Basic authentication, while others need to use Windows authentication. We normally host our services in IIS, although we do provide a less-developed Windows Service hosting…
PeteAC
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How to use Windows authentication as an alternative to password login? ASP.NET Core

I want to implement the following functionality: I have a website I'm creating in ASP.NET Core 6 and it will be both accessible from inside and outside of the server's network. When accessed from the outside, I only want to enable password login.…
aburger
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Win SSPI Negotiate auth when running a service and client both locally

At my job I faced an issue while running a WebService locally and doing authentication into it also locally. WebService uses Waffle with SSPI through JNA and expects Negotiate mech to be used for auth and from the client side I use Java's HttpClient…
jboo7
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Getting HTTP-401 error for SSO application using Apache JMeter 3.0

I am getting HTTP-401 (Unauthorized) error for single sign-on (SSO) application which I am trying to test. I am passing HTTP Authorization Manager with following information: Username/Password/Domain/Mechanism(KERBEROS). I am getting following…
kmodi85
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HTTP Post and Put returns 401 Unauthorized on specific workstations when authenticating using Negotiate on IIS windows integrated authentication

We have a strange behavior on small amount of workstations (Windows 7). Our .NET client is communicating with REST Api service (Web API 2) which is hosted in IIS. Client uses System.Net.Http.HttpClient to access the Api and is targeted to .NET…
sharppanda
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Chrome show ERR_UNEXPECTED when SPNEGO Kerberos authentication failed

I follow this guide to integrate my system with Windows AD. So when someone logon windows domain user, he can login to cas automaticly. If user don't use domain user, I want system return normal html login page. Now I have a problem, when I use…
zhufeizzz
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Curl using ruby

I'm trying to use Curl with SPNEGO negotiate kind of authentication through ruby. I tried several libraries, but seems like httpi has a way to do it through it's curb adapter like this link: https://gist.github.com/3179054#comments I was wondering…
anipendakur
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gss_init_sec_context return No credentials cache found (Windows, C++)

I try use gssapi32.dll in my application but I receive exception when app start name like 'HTTP/proxy.domain.com@domain.com' I saw this name in Kerberos Ticket Tools but I receive "No credentials cache found" maybe anybody already has similar…
Galbarad
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Blazor PWA using Negotiate authentification

I'm working on a PWA application in Blazor and I'm having two problems that seems correlated. My authentication process isn't working and everything is always loaded in cache (due to the PWA architecture) I'm using the Negotiate Authentication…
Jérôme Weber
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Authentication with 'Authorization: Negotiate' in the initial request with WCF

I'm trying to figure out if it is and how possible to initiate a connection with Authorization that avoids getting a 401 back from the server on the initial call. According to the RFC (https://www.ietf.org/rfc/rfc4559.txt, end of section 4.2), the…
Damir Porobic
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