After upgrade, stops email sync with exchange server!

Hello,
When I install emclient-v8.2.1721 and configure the account in Microsoft Exchange Server (on a Microsoft Small Business Server), all works fine, the only thing I need to do is accept this:

But when I upgrade to emcliente v9, it stops synchronizing the email !!!

LOG:

13:32:04 Estado online: alterado para online vencido a NetworkAvailability 
13:32:10 [email protected] [Exchange Web Services] MailClient.Accounts.ConnectionException: The SSL connection could not be established, see inner exception.
          ---> System.Net.WebException: The SSL connection could not be established, see inner exception.
          ---> System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.
          ---> System.Security.Authentication.AuthenticationException: Authentication failed, see inner exception.
          ---> System.ComponentModel.Win32Exception (0x80090331): O cliente e o servidor não podem comunicar porque não dispõem de um algoritmo comum.
            --- End of inner exception stack trace ---
            at System.Net.Security.SslStream.ForceAuthenticationAsync[TIOAdapter](TIOAdapter adapter, Boolean receiveFirst, Byte[] reAuthenticationData, Boolean isApm)
            at System.Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken)
            --- End of inner exception stack trace ---
            at System.Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken)
            at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
            at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
            at System.Net.Http.HttpConnectionPool.AddHttp11ConnectionAsync(HttpRequestMessage request)
            at 

 MailClient.Storage.Synchronization.FolderSynchronizerExtensions.SynchronizeSubfoldersAsync(IFolderSynchronizer synchronizer, Folder folder, SynchronizationPriority priority, CancellationToken cancellationToken)
            at MailClient.Protocols.Exchange.ExchangeAccount.SynchronizeIntAsync(Boolean forced)
            at MailClient.Protocols.Common.SynchronizableMailAccount.<>c__DisplayClass7_0.<<SynchronizeAsync>b__0>d.MoveNext()
           GUIStatus_Exception_Reported = True

Any suggestion ?
Thank you,
Jorge Barosa

Did you perhaps enable TLS 1.3 in your OS? If you did, disable it again and see if there is any difference.

Hi,
I never enabled the TLS 1.3, I checked on the registry and nothing is there!!

If I install directly the V9 it doesn’t ask for the certificate !

The entry would be in

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\

Here it is, not enabled: