Good Morning.

I possible to implement that when i close a tab, the software auto disconnect the remote session?

When a tab is closed, the remote session is always disconnected. That is automatic.

Unfortunately, it doesn't.

when i close a tab and I close the SW, if i go with another user to the console session, i see that my old session still open is. The session will not disconnected.

If i reopen the software and i try to reconnect to the server with mi credential, it will open the remote server and say "enter the password", because my session is still opened.

I think I understand what you are asking now. RD Tabs does not log off the user when you close a tab. Unfortunately, there is no way through the API to provide that functionality. Just FYI, in remote desktop terms, disconnected means that a remote session keeps running and can be reconnected to later even when the remote desktop session ends, which is what happens when you close a tab.