If you successfully performed a install, but you still cannot connect, the issue is likely Cipher Suites or Weak Cryptographic Settings .
Downloading older versions of FortiClient VPN is primarily done through the official , though access is typically restricted to users with active support contracts. Official Download Method (Requires Support Account) forticlient vpn download older versions
When downloading older versions of FortiClient VPN, keep the following in mind: If you successfully performed a install, but you
: For specific upgrade paths or compatibility checks between older clients and newer FortiGate firmware, consult the FortiClient Administration Guide Important Security Considerations Vulnerabilities If you do not have a direct support
Download old version of FortiClient - the Fortinet Community!
If you do not have a direct support contract, consider these options: Your Organization’s IT Team
: Browse through the folders for Windows, Mac, or Linux to find the specific release (e.g., 7.0.x or 6.4.x). Critical Limitations for Free Users No Official Public Archive