Technical Tip: Fix the duplicate license error by rebuilding the FortiGate

[AndrewX]

Description	This article describes that when adding the new ASE firewalls to the availability set (AS) in Azure, a duplicate license error is received.
Scope	FortiGate.
Solution	Background:  The user did the following steps, but still receives duplicate license error alert information:       • Save all the configuration details of VMs (ASE01: 10.57.3.4, ASE02:10.57.3.5).       • Delete just the VM resource, but keep the disk, NIC, and other resources.       • Recreate the VM from the configuration details from before but add the Availability Set.   Solution: Adding the licenses to a new instance requires downloading the license file from the support portal and then upload on the instance. Have to shut down the old instance completely, otherwise, it will receive a duplicate license error.