Symptoms

On a Windows Vista-based computer, consider the following scenario:

  • You use Wi-Fi Protected Access (WPA) together with Advanced Encryption Standard (AES) encryption to access wireless networks.

  • A computer certificate is configured correctly on the computer.

  • The computer has the correct permissions to access wireless networks.

In this scenario, you can see that a wireless network is available in the Connect to a network dialog box in the Network and Sharing Center. However, you cannot connect to the wireless network.

Cause

This problem occurs because the system does not handle unrecognized "Cipher and Authentication Key Management" (AKM) suites when the system is parsing the following information elements:

  • Robust Secure Network (RSN)

  • WPA

Resolution

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

No prerequisites are required.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, x86-based versions

File name

File version

File size

Date

Time

Platform

Package_1_for_kb935222~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

2,429

26-Apr-2007

15:48

Not Applicable

Package_2_for_kb935222~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,796

26-Apr-2007

15:48

Not Applicable

Update.mum

Not Applicable

1,885

26-Apr-2007

15:48

Not Applicable

X86_2b6897e2fd1d18d15752e85693719d40_31bf3856ad364e35_6.0.6000.20586_none_4a82f74f1c137d64.manifest

Not Applicable

713

26-Apr-2007

15:48

Not Applicable

X86_e29f4295bc570deb90adb1eb88e4b157_31bf3856ad364e35_6.0.6000.20586_none_e3832f0cab159dea.manifest

Not Applicable

695

26-Apr-2007

15:48

Not Applicable

X86_fb50ab363f3258e3ed4654f8f8a92972_31bf3856ad364e35_6.0.6000.20586_none_e4cd03f65f5f4044.manifest

Not Applicable

700

26-Apr-2007

15:48

Not Applicable

X86_microsoft-windows-l..securityhelperclass_31bf3856ad364e35_6.0.6000.20586_none_846bc1ac950dce90.manifest

Not Applicable

16,972

26-Apr-2007

15:52

Not Applicable

X86_microsoft-windows-native-80211_31bf3856ad364e35_6.0.6000.20586_none_4d5b85c5ab25125d.manifest

Not Applicable

5,229

26-Apr-2007

15:52

Not Applicable

X86_microsoft-windows-wlansvc_31bf3856ad364e35_6.0.6000.20586_none_9a971f082118ad55.manifest

Not Applicable

76,549

26-Apr-2007

15:52

Not Applicable

L2sechc.dll

6.0.6000.20586

124,416

26-Apr-2007

03:04

x86

L2sechc.mof

Not Applicable

2,334

25-Apr-2007

23:10

Not Applicable

Nwifi.sys

6.0.6000.20586

154,624

26-Apr-2007

02:17

x86

Gatherwirelessinfo.vbs

Not Applicable

14,827

07-Jan-2007

05:37

Not Applicable

Gatherwirelessinfo.xslt

Not Applicable

933

07-Jan-2007

05:37

Not Applicable

Report.system.wireless.xml

Not Applicable

59,620

07-Jan-2007

05:37

Not Applicable

Rules.system.wireless.xml

Not Applicable

164,680

07-Jan-2007

05:37

Not Applicable

Wireless diagnostics.xml

Not Applicable

33,991

07-Jan-2007

05:37

Not Applicable

Wlan.mof

Not Applicable

12,878

25-Apr-2007

23:10

Not Applicable

Wlan.tmf

Not Applicable

1,652,417

26-Apr-2007

02:17

Not Applicable

Wlanapi.dll

6.0.6000.20586

47,104

26-Apr-2007

03:06

x86

Wlanhlp.dll

6.0.6000.20586

67,584

26-Apr-2007

03:06

x86

Wlanmsm.dll

6.0.6000.20586

289,280

26-Apr-2007

03:06

x86

Wlansec.dll

6.0.6000.20586

299,008

26-Apr-2007

03:06

x86

Wlansvc.dll

6.0.6000.20586

502,784

26-Apr-2007

03:06

x86

Windows Vista, 64-bit versions

File name

File version

File size

Date

Time

Platform

Amd64_72c063ca0c55c6f79ef3c07ae4cbcd68_31bf3856ad364e35_6.0.6000.20586_none_36e7ff88812e09dd.manifest

Not Applicable

704

26-Apr-2007

15:48

Not Applicable

Amd64_a742c1c1d114bf15e9260daa3f2d5e43_31bf3856ad364e35_6.0.6000.20586_none_bd8544d0e0a30c8c.manifest

Not Applicable

1,040

26-Apr-2007

15:48

Not Applicable

Amd64_fdcd824ad1103e26237f3ed00da841aa_31bf3856ad364e35_6.0.6000.20586_none_f8666685f5d17ae8.manifest

Not Applicable

1,074

26-Apr-2007

15:48

Not Applicable

Amd64_microsoft-windows-l..securityhelperclass_31bf3856ad364e35_6.0.6000.20586_none_e08a5d304d6b3fc6.manifest

Not Applicable

17,004

26-Apr-2007

15:55

Not Applicable

Amd64_microsoft-windows-native-80211_31bf3856ad364e35_6.0.6000.20586_none_a97a214963828393.manifest

Not Applicable

5,494

26-Apr-2007

15:55

Not Applicable

Amd64_microsoft-windows-wlansvc_31bf3856ad364e35_6.0.6000.20586_none_f6b5ba8bd9761e8b.manifest

Not Applicable

76,621

26-Apr-2007

15:55

Not Applicable

Package_1_for_kb935222~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

2,658

26-Apr-2007

15:48

Not Applicable

Package_2_for_kb935222~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

2,037

26-Apr-2007

15:48

Not Applicable

Update.mum

Not Applicable

1,897

26-Apr-2007

15:48

Not Applicable

Wow64_microsoft-windows-wlansvc_31bf3856ad364e35_6.0.6000.20586_none_010a64de0dd6e086.manifest

Not Applicable

65,304

26-Apr-2007

15:55

Not Applicable

X86_microsoft-windows-l..securityhelperclass_31bf3856ad364e35_6.0.6000.20586_none_846bc1ac950dce90.manifest

Not Applicable

16,972

26-Apr-2007

15:55

Not Applicable

L2sechc.dll

6.0.6000.20586

155,648

26-Apr-2007

04:15

x64

L2sechc.mof

Not Applicable

2,334

25-Apr-2007

23:11

Not Applicable

Nwifi.sys

6.0.6000.20586

189,952

26-Apr-2007

02:45

x64

Gatherwirelessinfo.vbs

Not Applicable

14,827

07-Jan-2007

05:38

Not Applicable

Gatherwirelessinfo.xslt

Not Applicable

933

07-Jan-2007

05:38

Not Applicable

Report.system.wireless.xml

Not Applicable

59,620

07-Jan-2007

05:38

Not Applicable

Rules.system.wireless.xml

Not Applicable

164,680

07-Jan-2007

05:38

Not Applicable

Wireless diagnostics.xml

Not Applicable

33,991

07-Jan-2007

05:38

Not Applicable

Wlan.mof

Not Applicable

12,878

25-Apr-2007

23:11

Not Applicable

Wlan.tmf

Not Applicable

1,720,524

26-Apr-2007

02:45

Not Applicable

Wlanapi.dll

6.0.6000.20586

62,976

26-Apr-2007

04:17

x64

Wlanhlp.dll

6.0.6000.20586

97,792

26-Apr-2007

04:17

x64

Wlanmsm.dll

6.0.6000.20586

348,160

26-Apr-2007

04:17

x64

Wlansec.dll

6.0.6000.20586

373,248

26-Apr-2007

04:17

x64

Wlansvc.dll

6.0.6000.20586

603,648

26-Apr-2007

04:17

x64

Wlan.mof

Not Applicable

12,878

25-Apr-2007

23:10

Not Applicable

Wlanapi.dll

6.0.6000.20586

47,104

26-Apr-2007

03:06

x86

Wlanhlp.dll

6.0.6000.20586

67,584

26-Apr-2007

03:06

x86

Wlanmsm.dll

6.0.6000.20586

289,280

26-Apr-2007

03:06

x86

Wlansec.dll

6.0.6000.20586

299,008

26-Apr-2007

03:06

x86

L2sechc.dll

6.0.6000.20586

124,416

26-Apr-2007

03:04

x86

L2sechc.mof

Not Applicable

2,334

25-Apr-2007

23:10

Not Applicable

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.

More Information

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

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