Microsoft KB Archive/814560

= Composite USB devices whose interfaces are not sequentially numbered do not work in Windows XP =

Article ID: 814560

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Service Pack 1a
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Service Pack 1a

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SYMPTOMS
A device that contains more than one interface descriptor is known as a composite USB device. Each interface in a composite USB device is numbered. When you attach a composite USB device whose interfaces are not sequentially numbered to a computer that is running Microsoft Windows XP, the composite USB device does not start.



CAUSE
This problem occurs because a new driver for composite USB devices that is included in Windows XP assumes that all composite USB devices have sequentially numbered interfaces.

If the interfaces are not sequentially numbered, the driver (Usbccgp.sys) does not find all the interfaces when the driver is selecting an initial configuration for the device. The initial configuration does not work when it is submitted to the USB driver stack because some of the interfaces are missing in the configuration request. This difference in the list of interfaces causes the Usbccgp.sys driver not to start the device.



RESOLUTION
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

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. Date         Time     Version        Size     File Name     Platform --- 24-Feb-2003  14:03    5.1.2600.111   24,960   usbccgp.sys   Windows XP 21-Feb-2003   18:57    5.1.2600.1172  28,160   usbccgp.sys   Windows XP SP1



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

Keywords: kbhotfixserver kbqfe kbqfe kbwinxpsp2fix kbwinxppresp2fix kbfix kbbug kbprb kbusb KB814560

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