Error Snippet reference:
Problem/Conditions why we hit this error:
RAS_ReturnCode[809] indicates a disruption in the IPSec packet exchange between the client and server, such as ISAKMP packets. You can verify this by capturing traffic (PCAP) on your underlay adapter.
Try restarting the network adaptor on the Client computer
Using Control Panel
Press
Windows + R
, typencpa.cpl
, and press Enter.Right-click your active network adapter (e.g., Ethernet or Wi-Fi).
Select Disable.
Wait a few seconds, then right-click it again and select Enable.
Using Windows Settings
Go to Settings > Network & Internet.
Click Change adapter options under Advanced network settings.
Right-click the adapter and choose Disable, then Enable.
Try connecting to a non-Corp or Guest WiFi, or a different WAN IP/Network altogether and please check if the issue still persists.
If you still continue to hit an issue, please export the VSA Debug logs and the .pcap/wireshark capture during the time of the failure towards the Server's Public IP address.