You can access the official installer files through several Zyxel support and resource channels: Zyxel Official Download Page : The primary landing page for the SecuExtender IPSec and SSL VPN Client
Before installing the new client, go to Windows and uninstall any previous "Zyxel SecuExtender" or "ZyWALL IPSec Client." Failure to do so causes driver conflicts. zyxel ipsec vpn client download link
Misidentifying your firewall model leads to connection failures. Follow this checklist: You can access the official installer files through
