RB3011UIAS CONNECTION SERVER PPTP LOGUIN USER

Hello

I am configuring an RB3011UIAS as a vpn server PPTP and a microsoft client. The user connection is successful and even allows remote connection to different devices, but I have problems with users who have already disconnected or turn off the router and the session has not ended causing a new connection or double connection of the same, in the next login of the user and that is generating faults in the packet environment and deny access to a remote desktop.
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Welcome here. Please respect that this is English only forum and rewrite your post in English. Muchas gracias.