Troubleshooting Tip: FortiSwitch Registration Status is displayed as 'not registered' after FortiGate’s upgrade to v7.4.4

[Ivan_Sosa]

Description	This article describes an issue where the FortiSwitches registration status is shown incorrectly as 'not registered' under System -> Firmware & Registration and Security Fabric -> Fabric Connectors.
Scope	FortiGate v7.4.4, FortiSwitch.
Solution	After upgrading the FortiGate to v7.4.4, the FortiSwitch registration status is displayed as 'not registered'. However, the registration status is shown correctly under WiFi & Switch Controller -> Managed FortiSwitch and 'right-click' on the device and choose Registration. Security Fabric -> Fabric Connectors: WiFi & Switch Controller -> Managed Fortiswitches: This behavior is present when the name of the FortiSwitch does not match its serial number. This is just a GUI display issue and it has been resolved in FortiOS versions v7.4.5 and v7.6.1. Workaround: Rename the FortiSwitch using its serial number.