Given the unreliability and danger of portable hacks, Fortinet and industry experts recommended these official alternatives in 2021:
Portable network clients solve specific logistical problems for enterprise deployment. Unmanaged Personal Devices (BYOD) vpn forticlient portable 2021
The only safe and reliable way to use FortiClient VPN is to obtain the official installer directly from Fortinet. Given the unreliability and danger of portable hacks,