Hi Hank21,

there is no error message, because I do not have any option to choose, when the status is on disconnected. I do not even have the possibility to click restart or adopt or something like that. 

I always try to keep everything up to date, so my access points had already the latest firmware before I was updating the controller.

You are right: Diconnected means the connection is broken. When it would have been one single AP, maybe I had checked the network cable or a switch without electricity first and so on. But there were six APs disconnected at the same time, caused through an update. Ping I did not check - I do not know, what it would be good for. I know from the past: Disconnected means resetting every single AP at its individual location. Only then it would be possible to re-adopt.

  @Hank21 

All devices in the network are fully managed by Omada. The as disconnected shown APs are connected to different switches. Except the network clients all devices are Omada-devices.

By the way: in my opinion Omada is a great thing, when it works. And of course it does. The issue mentioned above is the only thing, I have to criticize in one year of use.

Again the same issue: This morning TP-Link provided an update for the OC200, the controller finished it successfully, but three of my access points were disconnected and kept staying in this mode. I had to reset all of them manually for readopting them. 

Does anybody have any idea for preventing the manual reset of as disconnected shown access points after controller update?

  @Hank21 

Thanks, I will try next time, the failure occurs.