Problem connecting Dell XPS 13 to wifi via WPA2-PSK

I am trying to connect a new Dell XPS 13 (9343) running Windows 8.1 Pro to wifi network.
Network card is Dell Wireless 1560 802.11ac
Wifi Network: Cisco WLC 2106 (Software Version: supports 802.11 a/b/g/n (Does NOT support 802.11ac)

Can connect to same wifi network (Guest Network SSID) via Web-Auth.  However, it fails trying to connect via WPA2-PSK to production network SSID.

Debug client on WLC shows that WLC never gets a M2 reply back.  Please see below.

Starting key exchange to mobile c4:8e:8f:f8:0d:97, data packets will be dropped
Sending EAPOL-Key Message to mobile c4:8e:8f:f8:0d:97 state INITPMK (message 1), replay counter
802.1x 'timeoutEvt' Timer expired for station c4:8e:8f:f8:0d:97
Retransmit 1 of EAPOL-Key M1 (length 121) for mobile c4:8e:8f:f8:0d:97
802.1x 'timeoutEvt' Timer expired for station c4:8e:8f:f8:0d:97
Retransmit 2 of EAPOL-Key M1 (length 121) for mobile c4:8e:8f:f8:0d:97
802.1x 'timeoutEvt' Timer expired for station c4:8e:8f:f8:0d:97
Retransmit failure for EAPOL-Key M1 to mobile c4:8e:8f:f8:0d:97, retransmit count 3, mscb deauth count 0
Sent Deauthenticate to mobile on BSSID 00:23:33:2c:db:40 slot 0(caller 1x_ptsm.c:467)

(WLC2106) >show advanced eap

EAP-Identity-Request Timeout (seconds)........... 30
EAP-Identity-Request Max Retries................. 2
EAP Key-Index for Dynamic WEP.................... 0
EAP Max-Login Ignore Identity Response........... enable
EAP-Request Timeout (seconds).................... 30
EAP-Request Max Retries.......................... 2
EAPOL-Key Timeout (milliseconds)................. 1000
EAPOL-Key Max Retries............................ 2

I have already tried the following:
Update Windows
Update NIC driver to the latest version
Increase EAPOL-Key Timeout to 3000 milliseconds
Increase EAPOL-Key Max Retries to 4
Disable Aironet IE
Disable Infrastructure MFP Protection
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Craig BeckCommented:
Any chance you can upgrade the code to  Your current version of code is well out of date!

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itchallAuthor Commented:
Yes, I will try to arrange a maintenance window and get the code updated.
itchallAuthor Commented:
I updated WLC code to version  I am now able to connect the laptop to the wifi network.

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