CredUIPromptForWindowsCredentials

[DllImport("Credui.dll", SetLastError = true)]
public static extern CREDUI_RETURN CredUIPromptForWindowsCredentials(
   ref CREDUI_INFO pUiInfo,
   uint dwAuthError,
   ref uint pulAuthPackage,
   IntPtr pvInAuthBuffer,
   uint ulInAuthBufferSize,
   out IntPtr ppvOutAuthBuffer,
   out uint pulOutAuthBufferSize,
   [MarshalAs(UnmanagedType.Bool)] ref bool pfSave,
   CREDUIWIN dwFlags
);

Microsoft documentation: Link