Recognizing the demand, Fortinet did provide an official installer (not portable but lightweight) starting around version 6.4 and 7.0. This installer required installation but excluded all endpoint protection modules. In 2021, many organizations migrated to this sanctioned approach rather than risking unofficial portable builds. The VPN-only client could be pushed via group policies or deployed by standard users with minimal privileges, offering a compromise between security and convenience.
2021 saw the peak of FortiClient 6.4 and 7.0 , which are the versions most compatible with older 2021-era systems. vpn forticlient portable 2021
Finding a (or later) can be tricky because Fortinet does not officially offer a "portable" edition that runs without installation. However, you can achieve similar results using official workarounds and the free "VPN-only" version. The "Portable" Reality for FortiClient Recognizing the demand, Fortinet did provide an official