Microsoft KB Archive/932030

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Article ID: 932030

Article Last Modified on 8/29/2007


  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Starter


You create a device driver that is based on the Microsoft PassThru Network Driver Interface Specification (NDIS) Intermediate Driver from the Windows Driver Kit (WDK). Then, you install this device driver on a computer that is running Windows Vista. When you restart the computer, Windows Vista incorrectly detects the miniport edge of the PassThru driver as a wireless local area network (WLAN) adapter.

Therefore, if you access the WLAN adapter manually, you may be unable to connect to a wireless access point.


This problem occurs because the WLAN API incorrectly returns the intermediate driver as an interface that is not in a ready state.


Hotfix information

A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:


No prerequisites are required to apply this hotfix.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfix.

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
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
Wlansvc.dll 6.0.6000.20522 502,784 25-Jan-2007 05:16 x86
Wlanmsm.dll 6.0.6000.20522 290,816 25-Jan-2007 05:16 x86
Wlansec.dll 6.0.6000.20522 297,984 25-Jan-2007 05:16 x86
Wlanhlp.dll 6.0.6000.20522 67,584 25-Jan-2007 05:16 x86
Wlanapi.dll 6.0.6000.20522 47,104 25-Jan-2007 05:16 x86
Windows Vista, 64-bitversions
File name File version File size Date Time Platform
Wlansec.dll 6.0.6000.20522 372,224 25-Jan-2007 06:24 x64
Wlanmsm.dll 6.0.6000.20522 350,208 25-Jan-2007 06:24 x64
Wlansvc.dll 6.0.6000.20522 603,648 25-Jan-2007 06:24 x64
Wlanhlp.dll 6.0.6000.20522 97,792 25-Jan-2007 06:24 x64
Wlanapi.dll 6.0.6000.20522 62,976 25-Jan-2007 06:24 x64


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


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

Additional query words: wlansvc

Keywords: kbbug kbfix kbqfe kbpubtypekc kbexpertiseadvanced kbhotfixserver KB932030