Title is marginally vague so let me clarify. We have several hundred laptops, some domain joined and some not, that connect to our network daily. Earlier this year we introduced a RADIUS server for wireless authentication via a Windows 2019 Server with the NPS role. This server is based in azure to allow for both our students who only have azure accounts as well as our staff who have hybrid accounts to join the Wi-Fi. We have a UniFi system of APs and managed switches in place to handle all the internal networking with a FortiGate firewall as our gateway.
The problem is effectively this: The laptops on campus are typically able to connect but when they can't connect I find no reference of them even failing a connection on the RADIUS server. I've dug around our UniFi setup looking for something out of place that could be causing an issue and haven't found anything that stands out. The part that boggles my mind though is that at the same time as some of these laptops lose their ability to connect to the Wi-Fi, other laptops on the same campus, sometimes even in the same building on the same AP can connect just fine. There seems to be no rhyme or reason to it. The laptops that can't connect span all makes and models from Dell to Asus, from Windows to Chromebook. I can't find anything connecting all the ones with issues together. And they vary from day to day too. I thought maybe it was an issue with too much traffic but we have the same amount of people getting on the network generally around the same time every day and it doesn't happen every day. I'm stumped on what could be causing the problem. If any further info is needed to help troubleshoot I will provide what I can.
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