Microsoft KB Archive/940514

= USB devices do not work after you disconnect and then reconnect a USB hub from a computer that is running Windows XP =

Article ID: 940514

Article Last Modified on 9/4/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Tablet PC Edition

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SYMPTOMS
When you disconnect a USB hub from a Windows XP-based computer, and then you reconnect the USB hub, USB devices that are connected to the USB hub do not work. Additionally, when you connect additional USB devices to the USB hub, the additional devices are not detected, and they do not work. This problem may occur only occasionally.

Note The USB hub may be integrated into a docking station or into a port replicator. Therefore, you may also experience this problem when you disconnect a portable Windows XP-based computer from a docking station or from a port replicator, and then you reconnect the computer. When you reconnect the computer, USB devices that are connected to the docking station or to the port replicator do not work.



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 item in Control Panel.



WORKAROUND
To work around this problem, restart the computer.



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 about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

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: kbfix kbexpertiseinter kbqfe kbhotfixserver KB940514

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