DNS resolution stops working when I connect to VPN.

SR Zak
SR Zak used Ask the Experts™
Hello Experts,

I have issue with an external client, he is using
a laptop with Cisco anyconnect vpn client and he would
usually connect to the vpn and would be able to browse the
internet and also access internal resources, shares and sites.

Today he connected from home and he was not able to browse anything,
I checked his laptop remotely and I was not able to ping google or resolve
any DNS names. To get him going I gave him default gateway IP in his VPN connection
but I am not suppose to do that.

My quest is why when he connects to vpN, the DNS stops.
I tried to replicate the issue using my hotspot and on my laptop
but i did not get the same symptons, my VPN does not give me GATEWAY ip and I
am able to browse plus access the internal resource.

I am certain this issue is local to his internet connection
at home.Please do let me know if anyone has any suggestions.

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Pete LongTechnical Consultant

Split tunnelling is not enabled?

Can other people connect and still browse the Internet?

Business Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018
Did Split Tunneling get disabled?  That could have happened.

Make sure you know the VPN settings, uninstall Any Connect, restart, install the newest version of Any Connect, set it up and then test.
SR ZakNetwork Solutions


Thank you all,

Split tunnel was enabled and I was not able to replicate the issue using my own laptop, it turned out to be the VPN client , once it was reinstalled the issue was resolved.

Thank you again
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Thanks for the update and I was happy to help you resolve this.

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