private static async Task Main(string[] args)
{
    var tt = FindCerts("40601d207ee44d9cc1679597635ff8d7").First();

    var handler = new HttpClientHandler
    {
        ClientCertificateOptions = ClientCertificateOption.Manual,
        SslProtocols = SslProtocols.Tls12
    };


    handler.CheckCertificateRevocationList = false;
    handler.ClientCertificates.Add(tt);

    var client = new HttpClient(handler);


    handler.ServerCertificateCustomValidationCallback = (message, cert, chain, errors) =>
    {
        return true;
    };

    var result = await client.GetAsync("");
    var rescont = await result.Content.ReadAsStringAsync();


    Console.WriteLine(result.StatusCode);
    Console.WriteLine();
    Console.WriteLine(rescont);
}

public static X509Certificate2Collection FindCerts(string serialNumber)
{
    foreach (var storeLoc in new StoreLocation[] { StoreLocation.CurrentUser })
    {
        foreach (var store in new string[] { "uMy", "mMy", "My", "umy", "mmy", "my", "mroot", "uroot", "root", "mRoot", "uRoot", "Root", })
        {
            var searchType = X509FindType.FindBySerialNumber;

            var certificatesStore = new X509Store(store, storeLoc);
            certificatesStore.Open(OpenFlags.ReadOnly | OpenFlags.IncludeArchived);

            var matchingCertificates = certificatesStore.Certificates.Find(searchType, serialNumber, false);


            if (matchingCertificates.Any())
            {
                return matchingCertificates;
            }

            certificatesStore.Close();
        }
    }

    return null;
}