Hi Friends,
Recently, one user had been encountering some issues with the CiscoAnyConnect VPN connection and Symantec Anti Virus is keep blocking some ports .(The block was due to the application vpndownloader.exe.).
VPN gateways and ports are already opened and all users can use well since a month ago.
One of my customer got a problem while testing CiscoAnyconnect VPN on the WIN8.1 laptop intermittently gets the below error :

He is trying to establish the connections to four gateways and manage to isolate the error to one box which consistently gave the above error (215.100.xx.xx);
My question is
(1) “vpndownloader.exe” required ?
(2)why it only affected one gateway.
p/s : We use 4 ASA boxes, but user only got an issue with one ASA box, using Windows 8.1 (most users use Win 7 & XP).
Any advise ?
Thanks & Regards,