Frequently Asked Question
1. Clear the Networking caches
Run windows cmd window (click windows start menu, type 'cmd', right click on 'Command Prompt' and select "Run as Administrator").
type command below:
netsh int ip reset
then type:
netsh int ipv6 reset
then type:
netsh winsock reset
Restart your computer.
2. Reset Device Manager adaptors
Open Device Manager
Find Network Adapters
Uninstall WAN Miniport drivers (IKEv2, IP, IPv6, etc)
Click Action > Scan for hardware changes
The adapters you just uninstalled should come back
The VPN connection then works.