No, we allow only one connection at a time for each of our VPN accounts. We set this limit so that we can provide the same high speed quality service to all of our user.
VPN error 619 is almost always a problem with a firewall on the client machine or the firewall the client is behind breaking PPTP.
One of the most common errors encountered when working with a VPN is error 800 - "Unable to establish the VPN connection." Unfortunately this error code doesn't tell you anything of why the connection is actually failing. If you encounter it, check the following: