I see the Auth from the client, and several retransmits, but no ACK from the AP. I captured the issue in Omnipeek and noticed the disconnect occurs when the client receives a probe request and attempts a roam. I'm working with TAC now figuring out if there is some combination of VHT and disabling another function to get clients working properly. In a 2 day long test, VHT was disabled, and the disconnects stopped. The user has to reboot their laptop in order to reconnect. However, the SSID they were connected to disappears from the network list. The user notices being dropped from the WLAN and attempts to reconnect by clicking the wireless icon in Windows. We're seeing several disconnects a day for (Win7) Dell laptops w/ Intel 7260s when VHT is enabled on AP-225s. I'm working through this issue right now with TAC, but would like to reach out to the community to see if anyone else is seeing this.
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