DNS stop working when Connected (Anyconnect)

[andre.ortega]

Hello there,

sometimes when I connect to my company's VPN using Anyconnect (4.9), DNS stop working on my computers (Win10 Enterprise 21H1).

Then I disconnect and connect the wifi, and it start working (VPN re-connects automatically).

The weird thing is that solving name doesn't work, but nslookup works.

Have anyone seem this behavior?

[balaji.bandi]

is this ping was the issue ? then it is your VPN HQ VPN policy - is this worked before ?

sometimes when I connect to my company's VPN using Anyconnect (4.9), DNS stop working on my computers (Win10 Enterprise 21H1).

[andre.ortega]

The problem is not the ping. The problem is that I cannot resolve name. Have a look on the ping, the failure is because the name was not solved.

And yes, after disconnect and connect again it works.

[borys.gorodetskyi]

did you resolve your issue?
I have same problem. all worked many years. nothing changed. but last weeks when connect office vpn and after some time dns stop working. but nslookup - work. similar your issue. 

[andre.ortega]

Yes, there is some time I don't see this problem.

You can try adding this command “client-bypass-protocol enable”, I believe it was the solution (or maybe it was some update, but I am not sure).

[RachelGomez161999]

Here are ways to fix it-
Try using another web browser or device. 
Get closer to your internet router. 
Restart your devices. ...
Change your DNS settings. 
Flush your DNS cache. 
Update your network drivers, router, and modem. 
Turn off your VPN and firewall.

Greeting,

Rachel Gomez

[andre.ortega]

It was not a connectivity problem.