client disconnected from access point due to 4 way handshake failed (timeout expired)

[yuki_framana_gi]

I have access point that is controlled by Smartzone 100. Sometimes, clients who have connected to the access point are suddenly disconnected from the access point and some time later can be connected again automatically. For wlan i use a radius for authentication

Based on the results of the troubleshoot that I did. I get the reason for the 4way handshake fail (timeout expired)



Please help how to fix it ?

Thank you,

[vincent_arrriol]

I am seeing this too on my 1000+ chromebooks in education. I have opened a ticket and they are reviewing logs that I sent them.

SmartZone 100 and R600 APs
No Radius authentication for me, though. Just WPA2 PSK

[vincent_arrriol]

Have you gotten anywhere with this, Yuki? I still have not heard back from support.

[yuki_framana_gi]

Hi 

previously I also had an open ticket. for this problem, they request to get packet capture when this problem occurs. but this is difficult for me to do, because I have to get packet capture exactly when this problem occurs (real time).

[yuki_framana_gi]

Hi,

Did you get the update from support?