Technical Tip: How to migrate FortiManager Cloud to FortiFlex license.

If a new Flex-VM license for FortiManager Cloud is purchased, the existing regular FortiManager Cloud license remains active by default. To switch to the Flex-VM license, the Serial Number of the Flex license must first be set on the FortiManager. This Serial Number is then propagated to all FortiGates currently registered in that FortiManager.

• Execute the following command on the FortiManager:

execute fgfm migrate-license <new-sn>

• Verify that the FortiGate recognizes both Serial Numbers (regular FortiManager Cloud and Flex-VM) by running:

show system central-management

• Next, open a technical support ticket (Technical Tip: How to create a ticket for Fortinet TAC) to request a transition from the regular FortiManager Cloud license to the FortiManager Cloud Flex-VM license, providing both serial numbers for reference.
• Once the transfer is complete, FortiManager Cloud reboots and the new Flex-VM Serial Number appears in the System Information Widget.
• If FortiGates experience connectivity issues to the FortiManager, run the following command to unregister the old serial:

execute central-mgmt unregister <Old-FortiManager-Serial>

• After waiting a few minutes, attempt to register to the new Flex-VM Serial:

execute central-management register <Flex-VM-FortiManager-Serial> fortinet

• If the issue persists, enable the central-management connector within the FortiGate GUI.
• In cases where the 'FortiManager Cloud' option is greyed out under the central-management connector, refer to Technical Tip: FortiGate 'FortiManager Cloud' option is greyed out.

Related articles:

• FortiFlex Version and Feature Support
• Enabling the FortiManager Cloud connector on FortiGate
• Technical Tip: FortiManager Cloud Button is Unavailable (grayed out) in the FortiOS GUI
• Troubleshooting Tip: How to troubleshoot connectivity to FortiManager Cloud
• Troubleshooting Tip: How to troubleshoot connectivity issues between FortiGate and FortiManager
• Troubleshooting Tip: How to connect FortiGate to FortiManager Cloud and troubleshoot connectivity issues