Check email - unable to read data from the transport connection

See more:

C#

email

sockets

Gmail

I am using a MailSystem[^] library to check Gmail account every 10 minutes.

In my application, I connect/log two different Gmail accounts at startup.
Whenever I switch the checking emails methods, I receive the exception:

Exception: Unable to read data from the transport connection: An established connection was aborted by the software in your host machine. 
StackTrace: System.IO.IOException: Unable to read data from the transport connection: An established connection was aborted by the software in your host machine. ---> System.Net.Sockets.SocketException: An established connection was aborted by the software in your host machine
   at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)

What I have tried:

I have tried a few things:
Added folder and file to exceptions of Antivirus system.
Allowed the application in the firewall.
I tried first to connect the one email and then connect the second email. After first inbox check, I receive the exception.

I connect to email using the code below, as a note I can add that to connect the email I use Task.Run method:

private Imap4Client Client => client ?? (client = new Imap4Client());

public Email(string username, string password)
{
    try
    {
        Client.ConnectSsl(GMAIL_IMAP, SSL_PORT);
        Client.Login(username, password);
    }
    catch (Exception ex)
    {
        LogSystem.Instance.AddToLog("Exception during logging to email");
        LogSystem.Instance.AddToLog(ex);
    }
}

On the timer object's Tick event, I check the inbox every 10 minutes as recommended in google notes.

Using this code:

private MessageCollection GetMails(string mailBox, string searchPhrase)
{
    var mailbox = Client.SelectMailbox(mailBox);
    MessageCollection messages = mailbox.SearchParse(searchPhrase);
    return messages;
}