One of the most common issues seen when working with a Microsoft Windows-based virtual private network is VPN error 619 – “A connection to the remote computer could not be established.” With some older VPN servers, the error message says “The port was disconnected.” instead.
This issue occurs when the computer is trying to establish a new connection to a VPN server or when it is suddenly disconnected from an active VPN session. The Windows VPN client begins the connection process and then typically pauses at the “Verifying username and password” step for several seconds before the 619 message appears.
Different types of VPN clients may experience this error including those that run using PPTP – Point to Point Tunneling Protocol.