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AZURE VPN not connection

g sanjay 1 Reputation point
2022-09-23T13:11:10.72+00:00

we are unable to connect vpn
pleases find the attached azure vpn issue

error is: Connection to VPN server failed with exception no such host is know

how to troubleshoot244295-vp222.jpg

Azure VPN Gateway
Azure VPN Gateway
An Azure service that enables the connection of on-premises networks to Azure through site-to-site virtual private networks.
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Windows for business Windows Server User experience Other
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  1. ChaitanyaNaykodi-MSFT 27,476 Reputation points Microsoft Employee Moderator
    2022-09-26T00:13:36.75+00:00

    Hello @g sanjay ,

    Thank you for reaching out.

    Host not found error usually occurs due failure of DNS resolution at the OS level.

    You can pin-point this issue by running a diagnostic on your VPN Client, you can clear DNS cache on your client machine with ipconfig/flushdns and reboot the machine.
    If you have any DNS filtering agent set-up in your client machine you can go through this similar case here and see if the provided solutions work for you.

    If you have already gone through the solution mentioned above. It will help if you can perform a packet capture at client machine and in the VPN Gateway as this might help you to further troubleshoot this issue. You can use tools like WireShark to perform a packet capture on your client machine and use packet capture functionality on the VPN Gateway

    Hope this helps! Please let me know if you have any additional questions here. Thank you!

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