Connection Open while processing a file for 45minutes then the session is not open

Hello, I connect via SFTP Renci and begin processing a file. It takes 45minutes to 1 hour and then finishes. I then try to move the file using sftpclient.Moveto but i get the error that "the session is not open". This was not an issue for smaller files that processed within a few minutes.

It seems to be timing out the connection when opened for too long. How can I extend it?
I've tried the below but it's still not working

                    client.KeepAliveInterval = TimeSpan.FromSeconds(30);
                    client.ConnectionInfo.Timeout = TimeSpan.FromMinutes(150);
                    client.OperationTimeout = TimeSpan.FromMinutes(150);
                    client.Connect();

Commencez par le cycle de vie de la connexion SFTP autour de SftpClient.MoveTo et des paramètres KeepAliveInterval, ConnectionInfo.Timeout et OperationTimeout indiqués dans le rapport. Reproduisez le cas de traitement de fichiers de 45 à 60 minutes et déterminez si la session reste ouverte ensuite ; le travail est terminé lorsqu’un correctif confirmé a été identifié ou que la configuration manquante ou la limitation a été documentée.