I run around 100 AIR-AP1832I-B-K9 on a WLC 5520 running 8.5.151.0. Recently I have noticed the APs randomly lose their preauth acl in the External WebAuth section. This causes issues for our users trying to connect on our guest wireless as the preauth ACL redirects to our ISE guest portal.
I have also had one randomly reboot and come back online to the default-group. Unsure what would cause this issue. Any thoughts?
