Troubleshooting Tip: Possible reason for an interf...

zromano · 11-25-2025

Description This article describes how it might be possible to recover a FortiGate that is not starting correctly and is stuck in a boot loop. Scope FortiGate. Solution In rare cases, it might happens that the FortiGate remains stuck in a boot loop a...

zromano · 10-29-2025

Description This article describes why it is not possible to disable ISDB entries using the CLI. Scope FortiGate. Solution ISDB exceptions can be added using the GUI by following this KB article: Technical Tip: How to Disable Specific IP Addresses or...

zromano · 09-26-2025

Description This article describes a possible reason why the connection to FortiGuard Distribution Network might fail when the FortiGate is configured to use a proxy for such a connection. Scope FortiGate using a proxy to connect to FortiGuard Distri...

zromano · 08-25-2025

Description This article describes the issue where even with a license, more than 10 VDOMs can't be activated on some models in v7.4 or lower. Scope FortiGate v7.4 or lower. Solution The number of available VDOMs can be seen with the 'get system stat...

zromano · 07-28-2025

Description This article describes why SD-WAN rules with route-tags might not match after SD-WAN reset. Scope FortiGate in 7.2. Solution If the following command is run to reset application control cache and route-tags for any reason, the SD-WAN rule...

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Troubleshooting Tip: Possible way to recover a FortiGate stuck in a boot loop

Troubleshooting Tip: Unable to create ISDB exceptions via CLI

Troubleshooting Tip: FortiGuard connection through a proxy failed

Technical Tip: Reason why more than 10 VDOMs can't be enabled on some FortiGate models

Troubleshooting tip: SD-WAN rules with route-tag stop working after resetting SD-WAN settings

Troubleshooting Tip: Possible reason for an interf...

Technical Tip: How to filter for IP addresses and ...

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