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https://support.microsoft.com/en-us/help/2749007/an-unexpected-401-1-status-is-returned-when-using-pre-authentication-h
Aug 22, 2012 · An unexpected 401.1 status is returned when using Pre-Authentication Headers with Internet Explorer and Internet Information Services. Contenu fourni par Microsoft ... Proxy-Support: Session-Based-Authentication. ... +BRI/2;+Creative+AutoUpdate+v1.41.02) 401 1 2148074254 5005. The HTTP status and sub status is 401.1, which maps to Access Denied ...
https://stackoverflow.com/questions/6189547/request-to-web-service-with-basic-authorization-via-proxy-with-ntlm-authorizatio
I got the app configuration working (WCF ServiceModel), it's using the default proxy credentials, the request is authenticating with the proxy, but after it authenticates with the web service it does not send the request body for some reason. The process works if I test locally without the NTLM proxy.
https://sharepoint.stackexchange.com/questions/5467/why-do-i-get-a-401-error-when-calling-a-wcf-service-from-a-web-part
I have a SharePoint 2010 web part and WCF service deployed to a web application using Kerberos authentication. The service was developed based on the walkthrough from MSDN with the …
https://social.technet.microsoft.com/Forums/en-US/42aae94e-64c6-4ca7-8274-a2921316321f/adfs-2016-sso-error-http11-401-unauthorized
Nov 22, 2018 · HTTP/1.1 401 Unauthorized Content-Length: 0 Server: Microsoft-HTTPAPI/2.0 WWW-Authenticate: Negotiate WWW-Authenticate: NTLM Date: Wed, 21 Nov 2018 00:32:22 GMT Proxy-Support: Session-Based-Authentication. It then prompts me to login, and if I log in, everything works OK. So fundamentally ADFS is working, but SSO isnt.
https://github.com/dotnet/corefx/issues/9234
Jun 07, 2016 · Since NTLM is session based, it requires the Proxy-Support: Session-Based-Authentication header to be included when authenticating through a proxy. Fiddler appears to add that header only if the first WWW-Authenticate header in the 401 response is either NTLM or Negotiate, or if a new connection is created and preauthenticated (The case when we ...
https://tools.ietf.org/html/rfc4559
A proxy that correctly honors client to server authentication integrity will supply the "Proxy-support: Session- Based-Authentication" HTTP header to the client in HTTP responses from the proxy. The client MUST NOT utilize the SPNEGO HTTP authentication mechanism through a proxy unless the proxy supplies this header with the "401 Unauthorized ...Cited by: 18
https://stackoverflow.com/questions/11582230/getting-blank-page-instead-of-401-error-page
I have an ASP.NET MVC3 application with Windows Authentication deployed to IIS6. When an authenticated user clicks on a link that they are not authorized to view, they are prompted to enter their username and password (in a browser dialog, not a page), as expected.
https://bugzilla.mozilla.org/show_bug.cgi?id=602814
But bug 592197 says NTLM auth through a proxy works. It was broken for SSL temporarily, but that works too. So what's different between this reporter's config/network and the people who reported, worked on, and tested bug 592197?Not "blocking" 1.9.2 security updates if it's been a problem since the initial 3.6 release, obviously the scenario in which this bug shows up is somewhat rare.
https://answers.microsoft.com/en-us/windows/forum/windows_10-networking/windows-10-ms-edge-browser-windows-authentication/0d0152f9-e3ec-49ec-b59b-a20e11f367b2
Oct 27, 2017 · Windows 10 MS Edge browser Windows Authentication Negotiation is not being done Hi All, In ... 401 - Unauthorized ... Proxy-Support: Session-Based-Authentication . Suggestions/More Information is appreciated :) Thanks is Advance. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.
https://forums.iis.net/t/1170562.aspx?IE+Proxy+won+t+use+NTLM+
Sep 02, 2010 · [Note to make this work required using an undocumented header in the response challenge, Proxy-Support: Session-Based-Authentication, that I observed ISA server using and Kerberos instead of NTLM. If I force NTLM, this fails] Then the URL requested is not local to the proxy server, the authentication process fails.
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