Depending on your deployment target (Libvirt/Virt-Manager, OpenStack, Proxmox, or raw QEMU), use one of the following preparations:
: Always perform a full configuration backup before starting. Go to Dashboard > Status > System Information > System Config > Backup .
: Greatly increased coordination between FortiGate and other products like FortiAnalyzer 7.2.3 and FortiManager.
Check for "Conserve Mode" to ensure the new build isn't over-utilizing the assigned RAM. Check the logs for any "Attribute mismatch" errors. Important Security Note