I'm not sure how to describe this issue. Or what to even look for to resolve it. But here goes nothing:
My company has recently deployed ISE to a facility for Identity management. After several months we ran into a host and myriad of problems which, thankfully, were resolved in one form or another. Recently we've had users report network related issues as ISE issues. 9 times out of 10, they're false alarms or red-herrings. A user mistyped there password, or an update was rolled out that knocked them offline, stuff like this.
However for the 1 out of 10... I can't explain.
A bit of background - We deployed ISE in an Apple majority environment. With only a handful of users on Windows. So features like EAP-Chaining are a no-go (Apple doesn't natively support it, and we haven't tested a 'supposedly' updated Cisco Anyconnect version that fixes this). Again this is all fine, we've been working around certain limitations.
From the user's perspective, they've logged into there machine without issues. But now the internet isn't working, and they have a Guest portal asking them to register with the network. And ISE is none-the-wiser that they're a corporate user. A simple reboot corrects the problem. But it's still an issue I'm trying to solve and prevent.
Any help is appreciated.
