What is ‘Error 720 a connection to the remote computer could not be established’ in Windows 10?
In this post, we are going to discuss on How to fix Error 720 a connection to the remote computer could not be established Windows 10. You are provided with easy steps/methods to resolve the issue. Let’s starts the discussion.
‘Error 720 A connection to the remote computer could not be established’:
VPN (Virtual Private Network) is the great way to access to another device remotely through internet, become parts of its LAN and use shared resources. You can also use VPN tool/software in your Windows computer to protect your privacy and security online. Some popular VPN application services are Private Internet Access, NordVPN, SurfShark, CyberGhost, and ExpressVPN. It is quite simple & easy to download, install and use VPN client app in Windows 10/11 computer.
However, several users reported they faced Error 720 A connection to the remote computer could not be established Windows 10 or ‘Error Code 720 – A connection to the remote computer could not be established’ on their Windows 10/11 computer when they launch and use VPN software. This error indicates you are unable to complete the connection establish to remote computer using VPN software for some reasons. Let’s take a look at error message.
“Error 720, Error connecting to a VPN Connection, A connection to the remote computer could not be established. You might need to change the network settings for this connection”
There could be several reasons behind the issue including corrupted WAN Miniport, issue with VPN server IP address with not working properly, hardware changes, malware or viruses infections in computer, interference of Windows firewall, and other issues. It is possible to fix the issue with our instructions. Let’s go for the solution.
How to fix Error 720 A connection to the remote computer could not be established Windows 10?
Method 1: Fix Error 720 A connection to the remote computer could not be established with ‘PC Repair Tool’
‘PC Repair Tool’ is easy & quick way to find and fix BSOD errors, DLL errors, EXE errors, problems with programs/applications, malware or viruses infections in computer, system files or registry issues, and other system issues with just few clicks.
Method 2: Check if your username and password are correct
Step 1: Right-click ‘Start’ menu and select ‘Network Connections’
Step 2: Select ‘VPN’, select your VPN connection and click ‘Advanced Options’, click ‘Edit’ and check username and password, and Server Address
Step 3: Click ‘Save’ when you are done, and check if the issue is resolved.
Method 3: Check Windows 10 Firewall for opened ports
Step 1: Type ‘Firewall’ in Windows Search Box and open ‘Firewall & Network Protection’ from results appear
Step 2: Click ‘Advanced Settings’ and confirm it if asked.
Step 3: Go to ‘Outbound Rules’, and check ‘Remote Port’ status
- 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.
Step 4: If you are trying to remotely access another PC using VPN, you should check ‘Inbound Rules > Local Port’ status on Server PC.
Method 4: Reinstall WAN Miniport Network adapter driver
Step 1: Open ‘Device Manager’ in Windows PC via Windows Search Box and expand ‘Network Adapters’ category
Step 2: Right-click on WAN Miniport device, and select ‘Uninstall’ to uninstall it, and repeat the same steps to uninstall all WAN Miniport devices, and after that, restart your computer
Step 3: Restarting computer will automatically reinstall all WAN Miniport driver again in computer, and then check if the issue is resolved.
Download or reinstall WAN Miniport driver update in Windows PC [Automatically]
You can also try to update all Windows driver including WAN Miniport driver using Automatic Driver Update Tool. You can get this tool through button/link below.
Method 5: Reset Winsock and flash DNS
Step 1: Type ‘cmd’ in Windows Search Box and press ‘SHIFT + ENTER’ keys on keyboard to open ‘Command Prompt as Administrator’
Step 2: Type the following commands and hit ‘Enter’ key after each to execute.
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
Step 3: Once executed, restart your computer and check if the issue is resolved.
Method 6: Set your router’s IP address
Step 1: Open ‘Command Prompt as Administrator’ using above method and execute ‘ipconfig’ command
Step 2: Select IP address next to ‘Default Gateway’ and hit ‘Enter’ to copy it
Step 3: Now, right-click ‘Start’ menu and select ‘Network Connections’, and click ‘Change Adapter Options’
Step 4: Right-click the incoming connections and select ‘Properties’
Step 5: Double-click ‘Internet Protocol version 4 (TCP/IPv4)’, select ‘Use the following IP address’ and paste the gateway. Save the changes and then check if the issue is resolved.
Method 7: Use a premium VPN Client
This issue can be occurred possibly if you are using VPN software of free version and it might possible the premium version of VPN software can resolve the issue. So, you can fix the issue by downloading and installing premium version of VPN software in computer, and then check if it works for you.
Conclusion
I am sure this article helped you on How to fix Error 720 A connection to the remote computer could not be established Windows 10 with easy ways. You can read & follow our instructions to do so. That’s all. For any suggestions or queries, please write on comment box below.
