September 25, 2023
VPN Connection Failed

VPN Connection Failed Due to Unsuccessful Domain Name Resolution

In this article, we’re going to discuss VPN Connection Failed Due to Inadequate DNS Name Resolution. Let’s begin! This happened to many users of this Cisco AnyConnect Secure Mobile Client. If you are experiencing an ” VPN failed due to a failed DNS resolution” problem. It is likely that your Cisco clients are unable to make it possible to establish a working VPN connection. It could also be a problem related to your DNS settings.

It can be resolved some minor DNS tweaks and creates the VPN connection through The Cisco AnyConnect client. If you check from the client’s side the fact that AnyConnect has been correctly installed and is ready to be used alongside your computer. With this information, you will be able to be sure that there’s no issue with AnyConnect. AnyConnect client.

How do I fix VPN Connection Problems due to a failure in Domain Name Resolution

Many Windows11/10 customers are having this issue right now because of a VPN provider. Therefore, we have also provided several options to resolve your VPN connection that has failed due to DNS issues.

Fix anyconnect.xml File VPN Connection Not Working

The best method to fix anyconnect.xml file is to uninstall the Cisco AnyConnect Client correctly from your PC , and then restart the computer. Then , you need to install a new copy of the program step by step. Finally, ensure that it’s installed properly and also.

The primary issue of this ” VPN connection failed due to a failure in Domain name resolution” error is that it occurs many times. anyconnect.xml File is corrupted. It is also not able to establish the VPN connection, too. It is possible connecting to a different region and also. Perhaps it will result in the connection successfully and fix the file.

Set DNS settings to change

It is also possible to alter the IP address of your DNS server to correct any issue with the internet connection. There are many DNS accessible on the internet. Like Google DNS, Open DNS as well as Comodo Secure DNS.

The issue can be solved after removing these items and then resetting DNS configurations to the default on Windows and Mac.

  • For Windows 10, just right-tap on the Start menu and select Network Connections..
  • You will now be able to view the network you’re connected to. All you have to do is click on it, then go towards Properties.
  • You must double-tap for Internet Protocol Version 4 (TCP/IPv4).
  • An additional dialog will appear where you must select to get DNS server addresses instantly.
  • Tap OK to store settings.

One of the main reasons for VPN failures in connection is due to Third-party VPN clients. For instance, Cisco VPN does not support static IP connections either. If you are making use of Google Public DNS or Open DNS, and so on. It is necessary to modify it to be a dynamic setting.

Reinstall Your Operating System | VPN Connection Failed

In the final, if the issue isn’t resolved by using the above procedures. The final option is to install a new version to the OS. This will solve all of your custom DNS settings and allow you to download Cisco’s Cisco client.

Before installing Windows OS, first, make backups of all of your important folders and files in addition. After that, you can restart or download a brand new version of Windows OS. In this way you will be able to access all settings that are default. Then, you must download the cisco client and see how it is able to successfully establish the VPN connection.


All right, that’s it Folks! I hope that you enjoy this article and will find it helpful. Let us know what you think about the article. Also , if you have any other questions or issues that are related to this article. Let us know in the comments below. We’ll be in touch with you in the near future.

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