Re: FortiAP 221E status disconnected after Update Fortigate to 6.2.1
Five months later, and I came across the same problem the other day. Working on the "fix" mentioned in the thread.
Took out of box, set up, upgraded all machines to most recent firmware. And like the OP, once the fortigate was updated, the ap consistently shows as disconnected, whether plugged into the firewall or the switches.
Will comment about the success or failure of the "fix." Stay tuned if interested.