How to Fix VPN Error 720

Virtual Private Networks (VPNs) are widely used to provide secure access to remote networks. However, sometimes VPN connections can encounter errors, and one of the most common issues is VPN Error 720. This error can occur on both the client and server sides and can be caused by various factors such as incorrect network settings, firewall issues, or problems with the VPN server itself. In this article, we will discuss several ways to resolve VPN Error 720 on both the client and server sides, allowing you to get your VPN connection up and running again.

What are the causes of VPN Error 720?

VPN Error 720 occurs when a user tries to establish a VPN connection, and the connection fails with an error message indicating that the remote computer could not be established. There are several reasons why this error can occur, including problems with the configuration settings, issues with the network adapter, or problems with the operating system. Other possible causes of VPN Error 720 include conflicts with antivirus or firewall software, problems with the VPN server or client software, and issues with the network infrastructure, such as a misconfigured router or modem.

How to diagnose VPN Error 720?

When it comes to troubleshooting VPN connection issues, there are several steps that you can take.

  • Firstly, it’s crucial to ensure that the remote VPN server is operating correctly and accessible from other locations.
  • Another possible cause of VPN Error 720 could be restricted internet access, which may occur if your internet service provider blocks specific VPN ports such as 1720 for PPTP.
  • Additionally, you should check that the firewall on your local router is not blocking VPN traffic and is configured to allow VPN pass-through.
  • It’s also crucial to make sure that the firewall on your computer is not blocking network traffic, which can be done by temporarily disabling Windows Firewall or any other Internet Security Program.
  • Slow or intermittent internet access can also cause VPN connection issues, so it’s essential to ensure that your internet speed is sufficient for VPN connectivity.
  • Updating your network adapter to the latest driver version can also be helpful in resolving VPN Error 720.

Finally, it’s important to ensure that TCP/IP IPv4 is enabled under the VPN connection. By following these steps, you can resolve VPN Error 720 and enjoy a stable and secure VPN connection.

How to Resolve VPN Error 720: Difficulty Establishing a VPN Connection

When attempting to establish a VPN connection, you may encounter an error known as VPN Error 720. Fortunately, there are several steps you can take to resolve this issue. Below, we will go through these steps in detail to help you fix this problem.

Assign a valid IP address

To troubleshoot VPN connection issues, there are various steps you can take. One solution for resolving VPN Error 720 is to assign a valid IP address to the VPN server. This can be done by accessing the ‘Network and Sharing Center,’ selecting ‘Change Adapter Settings,’ and configuring the ‘Internet Protocol Version 4 (TCP/IPv4)’ settings.

Make WAN Miniport adapters to remake themselves

Another approach is to delete the WAN Miniport adapters from the ‘Device Manager,’ and let Windows recreate them by selecting ‘Scan for hardware changes.’ Additionally, resetting the TCP/IP Protocol using the ‘netsh int ip reset resetlog.txt’ command in the Command Prompt window can also help fix VPN Error 720.

Reset TCP/IP protocol

Other potential causes of VPN connectivity problems include restricted internet access, firewall settings, slow or unstable internet speed, and outdated network adapter drivers. By taking these troubleshooting steps, you can diagnose and resolve VPN connection issues to establish a stable and secure VPN connection.

FAQs

What is VPN Error 720?

VPN Error 720 is a common error that occurs when connecting to a VPN. It indicates that the connection between the VPN client and the server has failed.

What are the common causes of VPN Error 720?

The common causes of VPN Error 720 include a malfunctioning VPN server, restricted internet access, a firewall blocking VPN traffic, network adapter issues, and an outdated network driver.

How can I fix VPN Error 720?

You can fix VPN Error 720 by assigning a valid VPN server IP address, allowing WAN Miniport adapters to re-create themselves, and resetting the TCP/IP protocol.

How can I assign a valid VPN server IP address?

To assign a valid VPN server IP address, go to Network and Sharing Center, select Change Adapter Settings, find Incoming Connection, and right-click on it. Click on Properties and select the Networking tab. Double-click on Internet Protocol Version 4 (TCP/IPv4) and select Use the following IP address. Enter the router IP address, such as 255.255.255.0 or 192.168.11.XX.

What should I do if WAN Miniport adapters fail to re-create themselves?

If WAN Miniport adapters fail to re-create themselves, try uninstalling all of the WAN Miniport (XXXX) devices or at least the ones linked to your VPN connection. Right-click on any item and select Scan for hardware changes. It should populate with new WAN Miniport adapters.

How can I reset TCP/IP Protocol?

You can reset TCP/IP Protocol by entering the following command in the Command Prompt window: netsh int ip reset resetlog.txt. Reboot your system and try reconnecting to your VPN again.

Conclusion

In conclusion, VPN Error 720 can be frustrating to deal with, but it can be resolved using the methods outlined above. By ensuring a valid VPN server IP address, allowing WAN Miniport adapters to re-create themselves, and resetting the TCP/IP Protocol, you can fix this error on your Windows system. Remember to always update your network adapters and ensure that your firewalls are not blocking network traffic to prevent future VPN connection issues. With these steps, you can resolve the VPN Error 720 and enjoy a secure and uninterrupted VPN connection.

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shahek raza
shahek raza
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