We are running ISE 2.1 and seeing issues with Windows 7/10 clients randomly getting disconnected from the network. At times users will experience the issue after a reboot of the client and at first logon in the morning. Clients are running native Windows supplicant using 802.1x user and computer authentication. All clients are connected to Cisco IP phones. One thing that is noteworthy is recently we deployed Cisco 3850 switches into our environment and the endpoints connected to these switches are the those experiencing the issues. Most of the other clients connected to Cisco 3750E switches are not seeing the issue. We just bought the 3850's and we are hesitant to deploy until the authentication issues are fixed. Any insight would be appreciated.
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