Troubleshooting Tip: Unable to upgrade FortiGate Firmware, the upgrade option is grayed out

[sdebnath]

Description	This article explains why the firmware upgrade option appears grayed out even when a new firmware version is available.
Scope	All supported versions of FortiGate.
Solution	The Upgrade button under FortiGate -> System -> Firmware is grayed out in some cases, even when a new version of the firmware is available, preventing the upgrade process from proceeding. See the screenshot below: This issue occurs when the firmware upgrade is triggered via Fabric Upgrade instead of the standard Upgrade option in the FortiGate GUI. Note that: If the FortiGate is not part of a Security Fabric or is operating as a standalone unit, it will not initiate a firmware installation through Fabric Upgrade. In such cases, the upgrade option will remain grayed out until the Fabric Upgrade process is canceled. Using the following command Fabric Upgrade process can be canceled using the CLI: execute federated-upgrade cancel Once the Fabric Upgrade is canceled, the Upgrade option will become available, allowing the firmware upgrade to proceed as expected. Note: Make sure that the admin user has a read write access to the FortiGate. Otherwise, the user will see the upgrade option greyed out. Related article: Technical Tip: How to Cancel FortiGate upgrade using Fabric Management Page (Fabric Upgrade)