Because the official forticlientvpnonlineinstaller-6.4 offline installer is hard to find, some users turn to file-sharing sites like Softpedia, Uptodown, or torrents.
Never do this. Cybercriminals actively exploit the search for FortiClient offline installers by:
Always verify the digital signature: Right-click the installer > Properties > Digital Signatures. Ensure it is signed by "Fortinet Technologies (Canada) Inc." and the certificate is valid. forticlientvpnonlineinstaller-6.4 offline installer
Fortinet’s public download page (limited versions):
Archived versions – be cautious with third-party sites. Always verify file hashes if downloading from unofficial sources. Because the official forticlientvpnonlineinstaller-6
You can create a free Fortinet account. Once logged into the support portal, navigate to:
Support > Firmware Download > FortiClient > FortiClient v6.4.0 Fortinet’s public download page (limited versions):
Here you will find both the online and offline versions, typically named: