First let me say I'm not yet impressed with Prime 3.
I have at present 74 APs, mostly 3702E, installed and working. The problem is that three of them are showing in Prime as not registered/not associated, and one doesn't show up at all.
If I check the controllers directly, one is a 5760WLC and one is a 3850, the APs are showing as up, registered, associated, and even have clients connected. I have synced the controllers in Prime on several occasions with no luck. So far, of the 15 controllers on the LAN I'm only having issues with these two.
Anybody have any ideas?