Troubleshooting Tip: No valid upgrade path from Fo...

nevan · 01-21-2026

Description This article describes the rejected traffic with policy ID 0 for the local-in-policy though there is no policy ID 0 showing in the configuration in FortiGate. Scope FortiGate. Solution User might see that the connection is failing in loca...

nevan · 12-19-2025

Description This article describes the error code 'object set operator error, -54 discard the setting' in the IPsec interface when there are identical subnets on both the interface and the remote-IP. Scope FortiGate. Solution Technically, the same su...

nevan · 12-19-2025

Description This article describes when using IPsec IKEv2 with SAML authentication (for example, Azure AD as the IdP), administrators may notice that VPN endpoints display the Fortinet default factory certificate instead of the certificate configured...

nevan · 12-15-2025

Description This article describes a known issue downloading the upgrade path table that causes the error message 'No valid upgrade path' when attempting to upgrade a FortiGate virtual machine and physical hardware platforms. Scope FortiGate running ...

nevan · 12-08-2025

Description This article describes the issue of an automation stitch being repeatedly triggered by a system log on a FortiGate device, causing multiple email alerts to be sent. The article provides a step-by-step solution to resolve this issue. Scope...

nevan · 12-07-2025

Dear rharms_tarc,Please try increasing ddns TTL, set the monitoring interface, enable if use of public IP if environment supports and adjust the update interval.config system ddnsset ddns-ttl {integer} set monitor-interface set update-interval {integ...

nevan · 12-01-2025

Dear prabhueee35,I would like to recommend you to open a TAC ticket first to verify and get the clarence of the RMA from technical team. Later on it will be transferred to the RMA team when it will be verified that the unit is qualified for the RMA.S...

nevan · 11-24-2025

Dear hvisage1,Please check the admin guide FortiOS version 7.6.3, it supports the NAT66.https://docs.fortinet.com/document/fortigate/7.6.3/administration-guide/245279Also, checked in the lab firewall though not having the same setup or not having any...

nevan · 08-27-2025

Excellent article that was highly needed!

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Technical Tip: Understanding 'policyid=0' drops for local-In-policy traffic on FortiGate

Troubleshooting Tip: Error 'object set operator error,-54' in the IPsec interface

Troubleshooting Tip : FortiGate IKEv2 VPN displays Fortinet default certificate instead of configured SAML certificate

Troubleshooting Tip: No valid upgrade path error when upgrading the FortiGate firmware

Technical Tip: FortiGate automation stitch repeatedly triggered by system log

Re: IPsec Dynamic DNS Addresses Not Updating

Re: RMA procedure to replace faulty Fortigate VM from Fortimanager 7.4.8

Re: IPv6 SD-WAN with multiple FttH ISPs -> PPPoE with DHCP-PD

Re: Troubleshooting Tip: Identifying the FortiGate reboot reasons and what to do next

Troubleshooting Tip: No valid upgrade path from Fo...

Troubleshooting Tip : Essential 'get' commands in ...

Troubleshooting Tip: Essential 'show' commands in ...

Technical Tip: Avoid NAT port exhaustion

Technical Tip: How to upgrade LTE(3G/4G) modem fir...

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