According to many users, this error could be caused due to the following reasons, however, the cause isn’t fully known:
WAN Miniports are corruptedThe issue with VPN server IP address which not working properlyHardware changes.
To diagnose this problem, follow these steps: If all these checks are alright, then you may need to perform some repairs. Let’s move to the possible fixes for this error.
Fix VPN Error 720: Error connecting to a VPN Connection
To fix VPN Error 720: Error connecting to a VPN Connection, follow these steps: Let’s look at these three options in detail.
1] Assign valid VPN server IP address
You need to assign a valid VPN server IP address to fix the issue. For that, do the following:
Open ‘Network and Sharing Center’ and hit ‘Change Adapter Settings’Find ‘Incoming Connection’ and right-click on it and hit ‘Properties’Click ‘Networking Tab’ and find ‘Internet Protocol Version 4 (TCP/IPv4)’Now double-click on ‘Internet Protocol Version 4 (TCP/IPv4)’ to go to ‘Properties’Now Click ‘Use the following IP address’ and enter your router IP address, for example, 255.255.255.0 or 192.168.11.XX
This hack for error 720 works on Windows 10, Windows 8, Windows 7, Windows 8.1 and Windows XP.
2] Allow WAN Miniport adapters to re-create themselves
Here we only need to delete and have windows recreate some items in the Device Manager. Follow these steps:
Open ‘Windows Device Manager’Navigate to ‘Network adapters’Uninstall all of the WAN Miniport (XXXX) devices or at least the ones linked to your VPN connectionRight-click on any item and select ‘Scan for hardware changes’. It will populate with new WAN Miniport adapters.
The WAN Miniport adapters should have re-created themselves, try reconnecting to your VPN again.
3] Reset TCP/IP Protocol
Try resetting TCP/IP Protocol by entering the following command in Command Prompt window: Reboot your system and reconnect VPN. Related errors:
VPN Error 789, The L2TP connection attempt failedVPN error 812, Connection prevented because of a policy configured on RAS/VPN serverError 13801, IKE authentication credentials are unacceptableVPN Error 609, A device type was specified that does not exist.
How do I fix VPN error 720?
To fix VPN Error 720 on Windows 11 and Windows 10 PC, you must follow the aforementioned solutions. You must assign a valid VPN server IP address, allow WAN Miniport adapters to re-create themselves, etc. However, if none of these solutions work on your computer, you need to reset the TCP/IP protocol.
Why does my VPN fail to connect?
There could be numerous reasons why your VPN fails to connect to a server on your Windows 11/10 computer. From a network problem to an internet connection issue, anything can be responsible for this problem. You need to start troubleshooting this problem by checking if you have a working internet connection or not. Then, check if the VPN servers are up and running or not. Final thoughts VPN Error 720 is one of the most common VPN-related errors where a remote computer connection fails to get established. The above hacks have worked for many users, but if you still face it contact your router support as there could be an issue with your router settings. Do let us know which hack worked for you, also if you have another fix for this error please share it across with us.
