Click , choose your destination folder, and click Install . Click Finish and restart your computer if prompted. Installation on macOS Open the downloaded .dmg file. Double-click the installer package inside.

Integrates with FortiToken and third-party MFA providers to add a layer of login security.

Click and grant administrative permissions if prompted. Click Finish and restart your computer if required. Open the downloaded FortiClient_6.4.6.dmg file. Double-click the installer package inside the volume.

If you encounter errors during or after installation, use these quick fixes to resolve them.

. However, this site typically only hosts the most recent "Free" version. For 6.4.6, you will likely need access to the Support Portal mentioned above. Key Features of Version 6.4.6 SSL and IPsec VPN

[Your Computer] ---> (FortiClient 6.4.6) ---> [Internet] ---> [FortiGate Firewall] ---> [Corporate Network] Launch the FortiClient application. Click on on the main dashboard.

One of the critical considerations when choosing a FortiClient version is its compatibility with your FortiGate. Version 6.4.6 supports IPsec and SSL VPN connectivity with the following FortiOS versions:

Because software vulnerabilities are discovered over time, running older software builds like 6.4.6 introduces potential security risks. If your corporate infrastructure supports it, upgrading to the latest FortiClient 7.x branch is highly advised to benefit from the newest security patches, bug fixes, and Zero Trust Network Access (ZTNA) features. Always ensure your local operating system updates are fully applied to protect the integrity of your encrypted tunnel.

: Right-click your network adapter, disable it, wait 5 seconds, and re-enable it. Alternatively, flush your DNS cache by running ipconfig /flushdns in the command prompt.

Method 1: The Official Fortinet Customer Support Portal (Recommended)

If the installation fails midway, older versions of FortiClient or competing VPN software (like Cisco AnyConnect or GlobalProtect) might be causing conflicts. Completely uninstall previous software versions and reboot your machine before retrying the FortiClient 6.4.6 installation. Security Considerations

If you require endpoint control features specifically, they are supported only with FortiOS 6.2.0 and later.