You experience a delay when you transfer data over a USB port and CPU usage increases to 100 percent on a computer that is running Windows XP with Service Pack 2

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You experience a delay when you transfer data over a USB port on a computer that is running Microsoft Windows XP with Service Pack 2 (SP2). For example, you experience a delay of five seconds before the data transfer is completed. When this problem occurs, CPU usage increases to 100 percent.
This problem occurs when a worker thread causes a delay during the data transfer.

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


You must be running Windows XP with SP2 to apply this hotfix.

Restart requirement

You must restart your computer after you apply this hotfix

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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.
Microsoft Windows XP with Service Pack 2, 32-bit versions
File nameFile sizeDateTimePlatform
Microsoft Windows XP with Service Pack 1, 32-bit versions
File nameFile sizeDateTimePlatformSP requirement
Microsoft Windows XP with Service Pack 1, Itanium-based versions
File nameFile sizeDateTimePlatformSP requirementService branch
Hccoin.dll12,80001-Apr-200517:22IA-64SP1Not Applicable
Usbccgp.sys128,89601-Apr-200500:04IA-64SP1Not Applicable
Usbehci.sys86,78401-Apr-200500:04IA-64SP1Not Applicable
Usbhub.sys207,10401-Apr-200500:04IA-64SP1Not Applicable
Usbohci.sys53,88801-Apr-200500:04IA-64SP1Not Applicable
Usbport.sys489,72801-Apr-200500:04IA-64SP1Not Applicable
Usbuhci.sys68,99201-Apr-200500:04IA-64SP1Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
For more information about terminology that Microsoft uses to describe software updates, 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

Article ID: 894618 - Last Review: 01/16/2015 01:38:33 - Revision: 4.0

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