Aside from the built-in Windows Firewall, I have no firewall or Internet security software installed. The inbound rule for PPTP (port 1723) is allowed in Windows Firewall.
The router that the server machine is connected to is a ADB E4001N. The router is configured correctly, as it has been used...
I am having a strange problem with the built-in PPTP server in Windows 8.1. Every time that the machine is started with a cold boot, I can't connect to the VPN. I run netstat -ano, and confirm that it is not listening on TCP port 1723. It is not listed at all, so it doesn't seem to be used by...