So here's an odd one. I am on 8.4.7 on premise fully. All of a sudden noticed all my iOS devices were failing to report in. Talking to the users they were actively using the devices. Couldn't figure it out after hours communicating with our network team and finding no traffic which was confusing. So I have the agent hidden visually on my iPad's. Pushed an app update to all the devices. And bamn, devices started communicating. Lots of them. Almost like Apple devices will not report a last seen date if there is nothing to do?
Thanks.
Steve