Microsoft KB Archive/915326

= When you remove an external USB 2.0 hub from a Windows XP-based computer, USB devices that were connected to the USB 2.0 hub are not immediately removed from Device Manager =

Article ID: 915326

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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SYMPTOMS
You remove an external USB 2.0 hub from a Microsoft Windows XP-based computer. After you do this, USB devices or optical drives that were connected to the USB 2.0 hub are not immediately removed from Device Manager. The devices remain in Device Manager for several minutes, even though they are no longer connected to the computer.

Note This problem can also occur when you remove a Windows XP-based computer from a docking station. The problem occurs if the docking station contains an integrated USB 2.0 hub that has connected devices.



CAUSE
This problem may occur if an audio-enabled CD device is also connected to the USB 2.0 hub or to the docking station. The problem occurs because the Redbook.sys digital audio playback driver is waiting for a worker thread to exit. The worker thread is waiting for a resource that is held by the Plug and Play manager for the device removal.



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

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 tool in Control Panel.



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

Keywords: kbqfe kbexpertisebeginner kbhotfixserver KB915326

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