Here you will find the reasons why this error occurs and solutions to fix VPN Connection Failed Due to Unsuccessful Domain Name Resolution.
Reason Why users facing “VPN Connection Failed Due to Unsuccessful Domain Name Resolution” Error
Well, the error “VPN connection failed due to unsuccessful domain name resolution” happens when users:
Using Public DNS (domain name resolution happens) or Google DNS (domain name resolution) users set up manually in the network settings.
Your VPN client has failed to establish a successful VPN connection due to some incorrect settings.
The VPN application which is installed on your device is not acknowledging the public DNS on your OS
Public DNS is down for some reason.
VPN software is not installed properly.
Best Methods To Fix VPN Connection Failed Due To Unsuccessful Domain Name Resolution” Error.
Most the Windows 8/10/11 users are facing this issue. We listed some methods to fix this error: VPN connection failed due to an unsuccessful DNS. If you are a Mac user then don’t worry we also got the solution for you.
Fix VPN Connection Failed Due to UnsuccessFul Domain Name Resolution For Windows Users
If you are a Windows user then you have to follow a few simple steps to fix VPN connection failures due to an unsuccessful DNS.
Method 1: Changing DNS (domain name resolution) Settings:-
Incorrect domain name resolutionsettings may be the root of this error. Settings that you set manually are not complying with public DNS on your system.
Follow the below instructions step by step carefully to change DNS settings on windows:
Step 1: Press the window button on the keyboard and type, the Control panel.
Step 2: Open the app from the search result.
Step 3: Go to Network and Internet.
Step 4: Click on network and sharing center. (In Windows 10)
Step 5: From the left panel, navigate to change adapter settings.
Step 6: Choose your network adapter from (Ethernet or WI-FI), right-click on it then select properties.
Step 7: Under the networking head, find Internet Protocol Version 4 (TCP/IPv4) from the list, and double click on it.
Step 8: Check up both circles to “Obtain DNS server address automatically.” and “Obtain a DNS server address automatically.”
Step 9: Click on SAVE, to save all these settings.
Generally, this DNS occurs when you use custom DNS servers like Google, Quad9, Cloudflare, OpenDNS Home, CleanBrowsing, Alternate DNS, and AdGuard DNS. In some cases, static DNS servers are compatible with VPN clients.
While changing the DNS setting to default it may change your custom DNS which you set up due to your internet services provider (ISP) DNS server being slow.
Now close the all windows tab and try to reconnect. Hopefully, you won’t have any issues.
Method 2:Repairing The Anyconnect.xml file:-
The second method is to repair the anyconnect.xml file by removing the VPN client properly and restarting your system. Then install a fresh copy of the software step by step to install it properly. The VPN connection failed due to an unsuccessful domain name resolution error that occurs when there is an error in Anyconnect.xml. You can also try connecting to other regions to repair the files.
Method 3: Contact VPN Client Support:-
You can contact your VPN client system manager and ask for assistance regarding the error. Or you can contact your ISP if the issue continues.
Method 4: Reinstall your operating system:-
If you are not able to fix the VPN connection failure due to an unsuccessful domain name resolution error by the above-mentioned methods then get ready to back up all your data and applications data. Because last but not least, we have to reinstall the window.
By doing this all the system settings were restored to their default. After that, you just need to install a VPN client properly and see how it connects successfully. Follow the below instructions step by step carefully to change DNS settings to solve VPN for Mac connection problems.
Ways to FIX Unsuccessful DNS VPN Connection Issue on Mac
Step 1: From the top left corner, click on the Apple logo.
Step 2: Go to the System preferences.
Step 3: Choose your network adapter from (Ethernet or WI-FI), then click on the Advance option.
Step 4: Navigate to the TCP/IP tab, you can see the DNS server IP address there.
Step 5: Select that DNS server IP address, and then click on the remove icon.
Conclusion: Method to FIX VPN Connection Failed Due To Unsuccessful Domain Name Resolution
We provided enough methods to fix the Hola VPN and Kaspersky VPN connection failed due to an unsuccessful domain name resolution error on windows and mac.
You can try the above-mentioned methods one by one. If you still face that error you should drop your VPN client and consider other VPN client solutions. You can use the other best VPN service providers to fix this issue.