I've gotten this error on a few other VCs that I've upgraded. I tried downgrading to the version of firmware that they had before (6.4.3.1-4.2.0.3_52603), and that fixed one or two but not all. We have an IP based firewall instead of domain based (I know...) so if there were any extra Aruba Central servers added in the latest firmware, that might affect my APs contacting them. Unfortunately, my firewall logs are less than stellar too so i cant tell what's being denied. Any changes that anyone knows of that might affect how these APs would activate on AC?
Thanks.