Wireless Products
Intel® Wi-Fi Products
Cannot connect to a LEAP network after upgrading to Microsoft Windows 7*

Symptom(s):
Unable to connect to a network configured with Cisco LEAP security using Microsoft Windows 7* OS, while Microsoft Windows XP* OS clients successfully connect.

Cause:
There might be two different causes for this issue:

1. Older supplicants used a Cisco-proprietary 802.11 management extension called "Network EAP." More recent EAP supplicants use "open with EAP", i.e. 802.11 open authentication followed by the EAPOL.

2. A previously fixed bug in the Cisco ACS Server*.

Solution:
In order to solve the supplicant issue, enable both settings on the Cisco AP/controller interface (see example):

 ssid SSIDNAME
 authentication open eap METHODLIST
 authentication network-eap METHODLIST

In order to solve the ACS issue, upgrade Cisco ACS Server to version number 3.3.4.12 or higher.

Operating System:

Windows 7 *, Windows 7 (32-bit)*, Windows 7 (64-bit)*, Windows 7 Enterprise, 32-bit version*, Windows 7 Enterprise, 64-bit version*, Windows 7 Home Basic, 32-bit version*, Windows 7 Home Basic, 64-bit version*, Windows 7 Home Premium, 32-bit version*, Windows 7 Home Premium, 64-bit version*, Windows 7 Professional, 32-bit version*, Windows 7 Professional, 64-bit version*, Windows 7 Starter Edition*, Windows 7 Ultimate, 32-bit version*, Windows 7 Ultimate, 64-bit version*, Windows 7(RC1, 32-bit)*, Windows 7(RC1, 64-bit)*

This applies to:

Intel® Centrino® Advanced-N + WiMAX 6250
Intel® Centrino® Advanced-N 6200
Intel® Centrino® Advanced-N 6205
Intel® Centrino® Advanced-N 6205 For Desktop
Intel® Centrino® Advanced-N 6230
Intel® Centrino® Advanced-N 6235
Intel® Centrino® Ultimate-N 6300
Intel® Centrino® Wireless-N + WiMAX 6150
Intel® Centrino® Wireless-N 100
Intel® Centrino® Wireless-N 1000
Intel® Centrino® Wireless-N 1030
Intel® Centrino® Wireless-N 105
Intel® Centrino® Wireless-N 130
Intel® Centrino® Wireless-N 135
Intel® Centrino® Wireless-N 2200
Intel® Centrino® Wireless-N 2200 For Desktop
Intel® Centrino® Wireless-N 2230
Intel® Dual Band Wireless-AC 3160
Intel® Dual Band Wireless-AC 7260
Intel® Dual Band Wireless-AC 7260 for Desktop
Intel® Dual Band Wireless-N 7260
Intel® PRO/Wireless 3945ABG Network Connection
Intel® WiFi Link 1000
Intel® WiFi Link 5300 and Intel® WiFi Link 5100 products
Intel® WiMAX/WiFi Link 5350 and Intel® WiMAX/WiFi Link 5150 products
Intel® Wireless WiFi Link 4965AGN
Intel® Wireless-N 7260

Solution ID: CS-032759
Last Modified: 17-Jul-2014
Date Created: 30-Aug-2011
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