Created on
04-23-2025
02:54 AM
Edited on
04-23-2025
02:55 AM
By
Jean-Philippe_P
Description | This article describes a possible cause and solution for FortiGate, which is not updating. |
Scope | FortiGate, FortiSASE. |
Solution |
To identify an issue with the update of a FortiGate, the KB article below explains all of the steps to troubleshoot it: Troubleshooting Tip: Failure on update or contact FortiGuard
In case the debug from the update daemon returns messages similar to the output below:
"Cert error 19, self signed certificate in certificate chain." "Server certificate failed verification. Error: 19 (self signed certificate in certificate chain), depth: 1, subject: <certificate>"
It might be the case that there is another device blocking the FortiGate from reaching FortiGuard. In the sample logs above, it was another FortiSASE which a deep inspection of the traffic was compromising the update. Setting this traffic to a certificate inspection fixes the issue. |