Microsoft KB Archive/936162

= Windows Management Instrumentation may not correctly report information about certain USB disk devices =

Article ID: 936162

Article Last Modified on 8/29/2007

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APPLIES TO


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

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SYMPTOMS
On a Windows Vista-based computer, you use a custom application that gathers system information by using Windows Management Instrumentation (WMI). For example, you use a custom application that gathers information about hardware, drivers, or firmware by using WMI. When you do this, WMI may not correctly report information about certain USB disk devices. Because of this problem, the custom application may not correctly recognize the USB disk device.



CAUSE
This problem may occur if the application uses the Win32_PNPDevice WMI association WMI class to report the function that a device performs. This problem occurs because Win32_PNPDevice WMI class does not correctly associate with a USB device. For more information, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/aa394352.aspx



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:

http://go.microsoft.com/?linkid=6294451

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:

http://support.microsoft.com/contactus/?ws=support

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 a previously released 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, 64-bit versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



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

Additional query words: Win32_PNPDevice WMI

Keywords: kbbug kbfix kbqfe kbexpertiseadvanced kbhotfixserver kbwinvistapostrtmfix KB936162

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