httpsys | Native HTTP stack for Node.js on Windows | Runtime Evironment library

How do i suppress or remove the HTTP response header 'Server: Microsoft-HTTPAPI/2.0'? Penetration testing has revealed that it is a security vulnerability to disclose the server platform.

I have a self-hosted asp.net core web application running on Windows Server 2019 and am using Http.Sys instead of Kestrel since I need NTML authentication.

According to Microsoft, the response header can be turned off via the registry, but it does not work for me. I have set the DisableServerHeader to 2 in the registry per HTTP.SYS registry settings and rebooted the server.

1. If I do not add a response header, it will be added automatically. Server: Microsoft-HTTPAPI/2.0
2. If I add a response header, the value will be added automatically. Server: my-dumy-value Microsoft-HTTPAPI/2.0

Update, I found the issue! I failed to enter the parameter name correctly, a traling space was revealed when I exported the key. It works as expected after removing the space and rebooting the server.

I want to use Http.sys to enable windows authentication and use POSTman to send GET request. I already enter my computer's account and password,but POSTman told me this error. Having no idea what happened,somebody can tell me the reason?
Configure Windows Authentication in ASP.NET Core
UPDATE My Purpose
Startup.cs

TLDR; I have near identical controllers that differ materially only by use of async/await (and of course Task). The non-async version returns the current user's username, as expected, but the async equivalent does not.

What I'd like to discover are

1. The circumstances under which this might hold true
2. That tools (besides Fiddler) available to me for investigating this

Note: I'm unable to debug against the ASP.NET Core source because permission hasn't been granted for running Set-ExecutionPolicy (which appears required for building the solution)

This works:

I have a situation where the HTTP Authorization request header size is more than 64kb (approximately 90kb) for a particular user. The reason for large size is because the header contains a bearer token, and the user who has initiated the http request has lot of claims.

The problem is for this particular user the web server always returns an error stating:

I know what the documentation says, but I do not know where the IServer gets introduced or how it is configured.

My specific case is that I am calling IHostBuilder.ConfigureWebHost (not ConfigureWebHostDefaults), which as best I can determine does not automatically include Kestrel. I am using HttpSys via a UseHttpSys instead of using Kestrel.

I ran into an issue when I ran two local development websites at the same time. Even though the lauchSettings file had different ports for each, they both did register port 5000. Of course the 2nd site received an error indicating that 5000 was already in use. After much poking around, I found documentation indicating that port 5000 was the default for everything not just Kestrel. (I really believed that prior to 5.0, only Kestrel defaulted to 5000.) I proved the defaults by explicitly setting a URL in my code and it was honored and 5000 was not accessed. I then removed the code and set "urls": "http://localhost:6000" in the appSettings file and it to was honored. At this point I tried both true and false as the parameter to PreferHostingUrls and they both worked with the url configured in the appSettings file and both failed without an explicit url in either the appSettings or code.

So part of the question becomes what is IServer and how is it introduced and configured.

This is my first question on StackOverflow so please excuse any dumb mistakes. I have been attempting to debug this for days. I'm new to mvc & the .NetCore 2.2 framework but I have done hours of research in general and specifically for this bug, so any help would be greatly appreciated.

It seems to me like it should be a pretty simple fix, but the fact that I'm not using a dictionary at all makes it that much more confusing to me.

I am creating a ui for users to be able to effectively query a database in a user-friendly way. This involves creating a IList. Each FilterModel takes in different inputs for specific attributes in the db.

My FilterModel:

HttpSys has Authentication.AllowAnonymous, but Kestrel does not have a similar setting.

How can I massively deny anonymous access to controllers without using attributes? To ask for a password.