Возвращен код ошибки 720 l2tp - ErrorsMaster.ru - большая энциклопедия ошибок и их решений

by Elena Constantinescu

Elena started writing professionally in 2010 and hasn’t stopped exploring the tech world since. With a firm grasp of software reviewing and content editing, she is always trying… read more

Updated on August 16, 2022

VPN error code 720 says that A connection to the remote computer could not be established. You might need to change the network settings for this connection.
You can fix this issue on your Windows 10 PC and establish a successful VPN connection using the 7 safe solutions we described in this article.
Check out the most common VPN error codes and their solutions.
Join our VPN Troubleshooting Hub to fix more VPN-related problems.

Using a virtual private network is a great way to gain remote access to another machine through the Internet, become parts of its LAN, and use shared resources.

But you can also use a reliable VPN tool to protect your privacy and security online. Unfortunately, it’s impossible to do this when getting a VPN error code.

If you received the VPN error 720 on Windows 10, it says A connection to the remote computer could not be established. You might need to change the network settings for this connection.

Try the following solutions to get rid of the error code and establish the VPN connection without any issues.

How do I fix VPN error 720 on Windows 10?

Check if your username and password are correct

Right-click the Start button and go to Network Connections.
Select VPN.
Pick your VPN connection and click Advanced Options.
Click Edit.
Also check the Server address.
Click Save when you’re done.

Find out how to correctly use the Windows 10 VPN provider.

Check the Windows 10 firewall for opened ports

Press the Start button, type firewall, select Firewall & network protection.
Click Advanced settings and Yes if prompted by UAC (User Account Control).
Go to Outbound Rules* and check the Remote Port status (depending on your preferred VPN protocol):
- PPTP – port 1723 over TCP and port 47 over GRE**.
- L2TP/IPsec – port 1701 over UDP (L2TP***) and ports 500 and 4500 over UDP (IPsec).
- SSTP – port 443 over TCP.
- IKEv2 – ports 500 and 4500 over UDP.

*The Outbound Rules must be configured on the client PC (the one that’s trying to connect to the VPN server). If you’re trying to remotely access another PC using a VPN, you should also check the Inbound Rules > Local Port status on the server PC (the one you’re trying to connect to).

**The default rules are called Routing and Remote Access (PPTP-Out) and Routing and Remote Access (GRE-Out), respectively.

***The default rule is called Routing and Remote Access (L2TP-Out).

If the ports associated with your preferred VPN protocol are closed, then you need to open the firewall ports associated wit your VPN protocol.

Reinstall the WAN Miniport network adapters

Right-click the Windows 10 Start button and go to Device Manager.
Expand the Network adapters menu.
Right-click any entry that contains WAN Miniport.
Press Uninstall device.
Click Uninstall to confirm.
Do this for all WAN Miniport entries.

The WAN Miniport network adapters will be automatically reinstalled by the operating system, as you can notice by right-clicking an entry in Device Manager and selecting Scan for hardware changes. Hopefully, this should fix VPN error 720 on Windows 10.

Reset Winsock and flush DNS

Launch Command Prompt as admin.
Paste the lines (press Enter between each line)
- ipconfig /flushdns ipconfig /registerdns ipconfig /release ipconfig /renew NETSH winsock reset catalog NETSH int ipv4 reset reset.log NETSH int ipv6 reset reset.log exit
Restart your computer.

This is a great method for quickly repairing networking issues that might interfere with your VPN connection. It might be enough to resolve error 720 on Windows 10 PC.

Find out more about fixing DNS issues in Windows 10.

Set your router’s IP address

Use the PC configured to accept incoming VPN connections.
Press Win + R, type cmd, press Enter.
Type ipconfig and Enter.
Select the IP address next to Default Gateway.
Press Enter to copy it.
Right-click the Start button and go to Network Connections.
Click Change adapter options.
Right-click Incoming Connections and go to Properties.
Switch to the Networking tab.
Double-click Internet Protocol Version 4 (TCP/IPv4).
Select Use the following IP address and paste the gateway.

This solution forces the VPN server to use your router’s IP address, which should help fix VPN error 720 on Windows 10.

Use a premium VPN client

Sign up for a PIA subscription plan.
Download and install PIA.
Launch the app and click its icon in the systray.
Press the big power button to connect to the nearest VPN server.

If you buy a trustworthy VPN application like Private Internet Access, you don’t have to worry about VPN error codes on Windows PC anymore since the client auto-resolves those issues.

We used PIA in our example because it’s the best VPN for Windows 10 PC. It’s a product owned by Kape Technologies, which can be installed on a wide range of devices, including Mac, Linux, Android, and iOS.

PIA supports OpenVPN and WireGuard protocols with strong encryption. You can set it up on 10 devices at once as well as contact the 24/7 live chat support if you encounter any problems.

More about PIA:

+3,300 VPN servers in 48 countries
Exclusive DNS servers
Port forwarding, split tunneling, kill switch
No logs or leaks
30-days money-back guarantee (no free trial)

Private Internet Access

Connect to PIA’s fast and safe servers to avoid any VPN error codes and enjoy a smooth browsing experience.

In conclusion, you can try the solutions above to fix VPN error 720 on Windows 10. However, if everything else fails, consider upgrading to a premium subscription plan.

We can’t think of a better VPN service than PIA. It’s also the best VPN for the Yandex browser.

Your connection is not secure — websites you visit can find out your details:

Your IP Address:
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Companies can sell this information, alongside your location and internet provider name, and profit from it by serving targeted ads or monitoring your data usage.

We recommend Private Internet Access, a VPN with a no-log policy, open source code, ad blocking and much more; now 79% off.

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