c# - LogonUser from advapi32.dll not working on Win11 24H2 - Stack Overflow

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I have a piece of code that was working for over 10 years and now we see on Win11 after updating to FeaturePack 24H2 that something goes wrong - can't use the LogonUser method anymore - always resulting in error 1326 - The username or password is incorrect - running the same code in Win11 23H2 is still working (also Win10 or Server versions are working)! Don't know why - any help would be really appreciated

Error occurs on call of LogonUser

internal class Program
{
    public const int LOGON32_LOGON_BATCH = 4;
    public const int LOGON32_LOGON_NETWORK = 3;
    public const int LOGON32_LOGON_INTERACTIVE = 2;
    public const int LOGON32_LOGON_NETWORK_CLEARTEXT = 8;
    public const int LOGON32_PROVIDER_DEFAULT = 0;
    public const int LOGON32_PROVIDER_WINNT50 = 3;
    public const int FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000;
    public const int FORMAT_MESSAGE_IGNORE_INSERTS = 0x00000200;
    public const int FORMAT_MESSAGE_ALLOCATE_BUFFER = 0x00000100;

    [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword,
        int dwLogonType, int dwLogonProvider, ref IntPtr TokenHandle);


    [DllImport("Kernel32.dll", SetLastError = true)]
    static extern uint FormatMessage(uint dwFlags, IntPtr lpSource,
        uint dwMessageId, uint dwLanguageId, ref IntPtr lpBuffer,
        uint nSize, IntPtr pArguments);

    [DllImport("kernel32.dll", SetLastError = true)]
    static extern IntPtr LocalFree(IntPtr hMem);


    private static IntPtr m_tokenHandle = IntPtr.Zero;


    static void Main(string[] args)
    {
        string user = "user";
        string domain = "domain";
        string pwd = "pwd";

        if (!LogonUser(user, domain, pwd,
                LOGON32_LOGON_NETWORK_CLEARTEXT, LOGON32_PROVIDER_DEFAULT,
                ref m_tokenHandle))
            Console.WriteLine("LogonUser " + getWin32ErrMessage());
        else
            Console.WriteLine("LogonUser successful");

        Console.ReadKey();
    }

    private static string getWin32ErrMessage()
    {
        int errCode = -1;
        string errMsg = "?";

        try
        {
            errCode = Marshal.GetLastWin32Error();
            errMsg = FormatMessage(errCode);
        }
        catch (Exception)
        {

        }

        return String.Format("failed with error code {0}, msg: {1}", errCode, errMsg);
    }

    public static string FormatMessage(int winErrCode)
    {
        int nLastError = winErrCode;

        IntPtr lpMsgBuf = IntPtr.Zero;

        uint dwChars = FormatMessage(
            FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
            IntPtr.Zero,
            (uint)nLastError,
            0, // Default language
            ref lpMsgBuf,
            0,
            IntPtr.Zero);
        if (dwChars == 0)
        {
            return null;
        }

        string sRet = Marshal.PtrToStringAnsi(lpMsgBuf);

        // Free the buffer.
        lpMsgBuf = LocalFree(lpMsgBuf);
        return sRet;
    }
}

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