Dear @TheWookie,

Everything was found just fine and adopted into the Omada Controller running on my desktop (I don't have a OC200.  After a few days I unplugged the ethernet cord from my desktop to move a few things around and when I plugged back the Omada controller shows my EAPs and switchs as disconnected.  It isn't an issue with the ethernet cable or wiring as everything else connects to the internet/ network.  I can't seem to find any button to reconnect the disconnect EAPs or switches.  I couldn't find anything when i searched onlineor in the guides.

The devices showing as Disconnected from Omada Controller indicates that the Controller host cannot communicate with those devices.

For the case, please check the actual status of the EAPs and switches, confirm they are connected to the network and working fine.

You may find the IP address of the EAPs and switches from the DHCP Server (typically a router).

Ensure the desktop that has Omada Controller installed obtains IP address properly from the network.

And try to ping the IP address of the EAP/switch to check the connectivity between the EAP/Switch and Omada Controller.

Besides, please confirm whether you configured any advanced settings such as VLAN on the Omada Controller before.

For more detailed troubleshooting, you could refer to the link below.

https://www.tp-link.com/support/faq/2581/

Dear @TheWookie,

It ended up being a firewall issue on the Windows computer running the controller   For some reason when I was rewiring and plugging stuff back in the network type changed to public versus private which blocks most things!

Thank you for sharing the solution, it's very enlightening.

Glad that your concern was resolved finally. Hope you enjoy the Internet with TP-Link products!