What is VPN Error 800?

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:

• are you using the correct VPN server IP? When delivered your VPN account has both a server IP and and assigned IP, please make sure you are using the server IP
• Is your network firewall blocking VPN connections? Port 1723 must be opened and Protocol 47 must be enabled in the firewall configuration settings