Our customer environment is using Cisco ISE 3.1 Patch 3 and WLC 5520 8.10.171 with Client connecting to SSID that used Guest-Portal (Authentication using Azure-AD).
in the last weeks,
when client connect to SSID (normal for the first time, the guest portal redirect showed up), and then hibernate the Windows device, and tomorrow come to work again,
it shows on Error 400 Bad Request (picture attached) when connecting to SSID.
FYI, when client restart the Windows, the client can connect normally.
what causing this? is anyone experiencing this type of issue?
*in another customer, they also experiencing this issue, while using ISE 2.4