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
FortiOS 7.0 and above not updating signature databases
Sometimes it happens, that FortiOS is not updating it’s antivirus signatures anymore. The monitoring software, a monitoring script or a very attentive administrator is then reporting this problem to the FortiGate admin to fix it. This guide will lead you through the steps to troubleshoot this.
Fortiguard DNS servers are enforcing EDNS policies
Some of you may have noticed that a Fortigate – configured to use the FortiGuard DNS Servers – is not resolving some DNS names anymore. Consequences can be that FQDN address objects can not be resolved or a configured mail server can not be used anymore.
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…
Upgrade your FortiMail now!
There seems to be a vulnerarbility in some FortiMail versions, that allow an unauthenticated remote attacker to access the system by requesting a password change. Please refer to the FortiGuard PSIRT article. The problem here is not only the unauthorized access to the system, but also the change of the…
What’s new with FortiOS 6.2: FortiGuard Requests
FortiOS v6.2 has been released in March this year and we are still gaining experience with this version. In this article we would like to draw you attention to the protocol which is used for FortiGuard service communication. Up to v6.0 udp has been used, with 6.2 the default protocol…
WatchGuard Fireware 12.5
Watchguard is going to release Fireware version 12.5 in the next few days / weeks. From the public beta phase some new features are already known, which I would like to introduce here: Update: Fireware 12.5 has been released.Please check the ” What’s New in Fireware v12.5 ” presentation for…