A: Check Fortinet’s "Legacy Downloads" section in the support portal. If missing, open a ticket with support—they maintain an internal archive of every build since 2005.

| Use case | Verdict | |----------|---------| | Corporate requirement (IT says use v6.x) | ✅ Yes – safe from official portal | | Personal lab / old hardware | ⚠️ Cautiously – expect compatibility issues | | Bypassing a recent bug | ✅ Temporarily – but report bug to Fortinet | | Downloading from random third-party site | ❌ Strongly avoid |

Downloading older versions of FortiClient VPN can be a bit challenging, as Fortinet may not make them readily available on their official website. However, there are a few methods to obtain older versions of the software:

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