Troubleshooting Tip: Helpful FortiClient processes to execute upon receiving an error during 'FortiClient Signature Updates'

In the event of any issues encountered during AV signature updates, follow the steps outlined below, which may assist in troubleshooting.

Execute two commands from the C:\Program Files\Fortinet\FortiClient> folder

update_task.exe -s fd_01 > C:\update.txt

update_task.exe -d > C:\update2.txt

Results can be examined as follows:

The following are the suggested steps to fix the issue:

• Verify whether firewall traffic to the destination 'serverip=fctupdate.fortinet.net, serverport=443' is allowed.
• For testing purposes, SSL Deep inspection can be disabled in the respective firewall policy.
• Additionally, change the FortiGuard servers to Global/US/Europe on EMS and attempt the process again.

Try changing the FortiGuard Server type from FortiGuard to FortiGuard Anycast.

For testing purposes only (not recommended), disable the 'Enable SSL' option under 'EMS -> System Settings -> FortiGuard Services' and attempt the process again to observe any changes.

After following the steps, if the issue persists, contact Fortinet through the technical Support channel to create a Technical Assistance Ticket for further troubleshooting.