Background: All the Windows 7 pro machines can connect to VPN via PPTP or SSTP on a Windows 2008 R2 VPN server fine. But windows 8.1 Pro can't. It generates 720 on the machine and on the server with this error:
port xyz has been disconnected because no network protocols were successfully negotiated.
Things I've tried:
- Changing settings
- Re-installing Network drivers
netshto reset TCP/IP stack
- Removing and re installing wan-miniports
- Turning off firewalls etc