Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

[jmroy]

Hi community, this is my first post.

Context :

In our company, we have a lift. There is a Windows tablet bolt on that lift. The driver of the lift goes to multiple places in the company, crossing 4-5 AccessPoint.

The APs are set in neighbor, and we see in logs when the client is being sent to a neighbor AP.

• APs are 5x AP121 on 6.5r8.172694
• WMM is activated

Problem :

There is a problem where the Windows tablet is being disconected from the network, like there were a roaming problem, or something. He only disconnect and reconnect the Wifi adapter and the network is coming back OK.

Logs :

When i monitor the MACADDR of the tablet, we see multiple problems.Just note that we do not have a problem where the tablet is NEVER able to connect. Disabling the wifi interface and reenabling it make it works though.

I will put a log file in attached.

Here are some highlights :

Error 1 : 4 way Handshake failure

06/11/2018 09:50:41 AM 80000B98F7E7 F09CE91673D4 INF2911   BASIC  (2)Sta(at if=wifi0.1) is de-authenticated because of 4way handshake failure

06/11/2018 09:50:41 AM 80000B98F7E7 F09CE91673D4 INF2911   INFO  (3)Tx disassoc (reason 2 <prior-auth-invalid>, pwr 11dBm)

06/11/2018 09:50:41 AM 80000B98F7E7 F09CE91673D4 INF2911   BASIC  (4)Sta(at if=wifi0.1) is de-authenticated because of notification of driver

Error 2: ?

06/11/2018 10:15:13 AM 80000B98F7E7 F09CE91673D4 INF2911   INFO  (333)Rx deauth (reason 1 <unspecified>, rssi 36dB)

06/11/2018 10:15:13 AM 80000B98F7E7 F09CE91673D4 INF2911   BASIC  (334)Sta(at if=wifi0.1) is de-authenticated because of notification of driver

Error 3 ?

06/11/2018 12:15:09 PM 80000B98F7E7 F09CE91673D4 INF2911   INFO  (1718)Rx deauth (reason 1 <unspecified>, rssi 32dB)

06/11/2018 12:15:09 PM 80000B98F7E7 F09CE91673D4 INF2911   BASIC  (1719)Sta(at if=wifi0.1) is de-authenticated because of notification of driver

Error 4 ?

06/11/2018 12:46:25 PM 80000B98F7E7 F09CE91673D4 INF2911   INFO  (1938)Rx deauth (reason 1 <unspecified>, rssi 23dB)

06/11/2018 12:46:25 PM 80000B98F7E7 F09CE91673E8 INF2911   DETAIL (1939)Rx <specific> probe req (rssi -69dB)

TESTS :

• When doing a survey, i see at least 2-3 AP (with the same SSID) everywhere, for the Roaming. So there is no zone where there is no Wifi.

• When i go with a laptop, i can go from one side to another side of the company with a ping -t without being disconnected from the Wifi.

Problem may be a roaming problem ? (since when i disconect and reconnect the Wifi, i am successfully being reconnect to the nearest AP)

Problem may be a channel problem ? (set automaticly).

Thank you for your help !

[wwillingham]

Also, don't forget to update the driver on the tablet. A lot of Wi-Fi issues come down to old, "flaky" drivers.

[dsouri]

Hi @Jean-Marie Roy​ ,

Case is created, also I had to move your Contact record to the correct company and enable Case management within HiveCommunity.

Thank you, and talk soon!

David Souri

HiveCommunity Moderator

[jose_gonzalez]

Try disabling wireless power management on the tablets.

[jmroy]

Hi David Souri, I am waiting your follow regarding the openning of the Support Case.

Jm Roy