Last Update 22.10.2026 Update – 11. September 2026: We received feedback from our partners indicating that the issue has recurred. Fortinet has confirmed the issue and provided the following response:
FortiGuard Servers are not reachable
FortiGuard DNS Rating Server (SDNS) unavailable
Last update from 12.05.2021 at 09:40 Swiss local time: We have noticed an improvement in the situation. Some rare rating timeouts still show up from time to time, but the majority of requests are being answered correctly. Also the DNS servers are working as usual again. We have noticed an…
FortiOS 6.2: Upgrade Notes
Due to several known issues, we did not recommend the use of FortiOS 6.2 in productive environments for the first couple of months. As per FortiOS 6.2.5, we noticed that most of the issues have been resolved. Please have a look into our FortiOS upgrade guide for the upgrade procedure.