Microsoft KB Archive/918365

= The Usbser.sys driver may not load when a USB device uses an IAD to define a function that has multiple interfaces, and this function uses the Usbser.sys driver file in Windows XP =

Article ID: 918365

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
Consider the following scenario:
 * A universal serial bus (USB) device uses an interface association descriptor (IAD) to define a function that has multiple interfaces.
 * This function uses the Usbser.sys driver file.

In this scenario, the Usbser.sys driver may not load.



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
To apply this hotfix, you must have Microsoft Windows XP Service Pack 2 (SP2) installed.

For more information about how to obtain the latest Windows XP service pack, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Restart information
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix is not replaced by any later hotfix.

Registry information
You do not have to create any registry keys or modify any registry keys to use any hotfixes that this package contains.

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.



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 the terms that are used in this article, 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: windowsxp winxp usbser

Keywords: kbwinxppresp3fix kbexpertisebeginner kbfix kbbug kbhotfixserver kbqfe kbpubtypekc KB918365

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