30-04-2021

Unsuccessful Domain Name Resolution Cisco Vpn



[solved] how to resolve the Cisco Anyconnect error message “VPN connection failed due to unsuccessful domain name resolution”

The above message is a very common message caused by the local internet provider DNS resolution failure and cane be fixed very easily.

below is the error message that you may get when trying to connect to the VPN while connected to the home internet.

You will see that Cisco Anyconnect displays an error message where it is not able to connect to the VPN host using the hostname.

Trying The VPN due to unsuccessful domain Resolved: Clients are receiving need to make a dns resolution problem windows that was manually entered to unsuccessful domain name name - IP) returns VPN connection failed due resolution.' 'The VPN connection failed due to unsuccessful domain name resolution' I have Googled it quite a bit and tried following all the fixes: no local statically defined dns servers, make sure the client is up to date, flush dns client-side.

The first thing you will need to confirm is if the DNS resolution is working and in order to confirm that you will need to run the command prompt.

Launch the command prompt by going “start” “run” type “cmd” – see the screenshot for reference.

You can test the resolution by pinging espn.com.

  1. type “ping” and you can see Ping espn.com is not resolving.
  2. nslookup for cnn.com does not resolve and shows a loop back address as a dns server.

One good place to see more logs is by going to the gear icon on the Cisco Anyconnect. see the screenshot below for reference.

Unsuccessful Domain Name Resolution Cisco Vpn Download

Go to the VPN tab and message history and you can see how many times, the client tried to connect and failed..

Start the command prompt again to test the DNS resolution.

This time use the DNS lookup using the google DNS server and you will see a response and that confirms that is the DNS server.

You can update the DNS server by manually adding the google DNS server for a temporary fix until your internet provider fixes the issue.

Service

Thanks for ready this.

Skip to end of metadataGo to start of metadata
You are viewing an old version of this page. View the current version.Compare with Current | View Page History

You are trying to connect to MIT's VPN, but get an error:

The VPN connection failed due to unsuccessful domain name resolution.

Answer

The cause is not fully known, but this is seen more frequently when people are using Google Public DNS (DNS servers 8.8.8.8 and 8.8.4.4)

  • Try using another DNS server, such as your ISP's DNS server
  • Try sending some pings to vpn.mit.edu before connecting; these can help cache the IP address in your DNS cache.
  • Wait a few minutes and try connecting again; the connection can work if you try again later.

Cisco Anyconnect Could Not Connect To Server

Labels parameters
Labels:

Vpn Won't Connect Unsuccessful Domain Name Resolution

None