Pre-requisites
To upgrade to 8.6 from 8.4.2, an intermediate upgrade to 8.5 or 8.5.1 is required. Contact the Customer Support for installing the relevant patch.
To discover the FortiWLC 8.3.3 64-bit controllers (listed below) in FortiWLM 8.4.0 and above, you need to apply the FortiWLC 8.3.3 patch. Contact the Customer Support for installing the relevant patch.
- FortiWLC-1000D
- FortiWLC-3000D
- FWC-VM-50
- FWC-VM-200
- FWC-VM-500
- FWC-VM-1000
- FWC-VM-3000
Upgrade FortiWLM before you initiate controller (FortiWLC-SD) upgrade. While upgrading a FortiWLM with over 100 controllers, the controllers return to active state sequentially, one at a time. It may take up to 10 minutes or more for all controllers to become active.