Massi636

Stop problems; this is may way after have read all posts:
added  server.Stop() that simply do a this.tcpListener.Stop(); from the closing event of the main form. Then added  List<TcpClient> clientList = new List<TcpClient>(); and added a client in my collection each time a clientThread.start(); then catch the exception in the while(true) and close all client in the list. I suggest to check with processExploer: it's working fine! Many thanks!