<PackageReference Include="System.Net.Http.WinHttpHandler" Version="11.0.0-preview.2.26159.112" />

System.Net.Http.WinHttpAuthHelper

sealed class WinHttpAuthHelper
public WinHttpAuthHelper()

public void ChangeDefaultCredentialsPolicy(SafeWinHttpHandle requestHandle, uint authTarget, bool allowDefaultCredentials)

public void CheckResponseForAuthentication(WinHttpRequestState state, ref uint proxyAuthScheme, ref uint serverAuthScheme)

public bool GetServerCredentialsFromCache(Uri uri, out uint serverAuthScheme, out NetworkCredential serverCredentials)

public void PreAuthenticateRequest(WinHttpRequestState state, uint proxyAuthScheme)

public void SaveServerCredentialsToCache(Uri uri, uint authScheme, ICredentials serverCredentials)