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Article ID: 969238 - Last Review: October 7, 2011 - Revision: 2.0

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On a computer that is running Windows XP, when you transfer data from or to a universal serial bus (USB) device, the data transfer is corrupted. The computer restarts and you receive the following stop error message:

STOP 0x000000D1 (parameter1, parameter2, parameter3, parameter4)
  • The four parameters in the error message vary, depending on the computer's configuration.
  • Not all "STOP 0x000000D1" errors are caused by this problem.
This problem occurs when the following conditions are true:
  • The data transfer uses USB bulk transfer mode.
  • During the data transfer, multiple USB request blocks (URBs) are submitted to the Microsoft Windows USB driver stack without waiting for each one to finish.


A problem in the USB 2.0 Enhanced Host Controller driver (Usbehci.sys file) causes the data transfer to become corrupted. This problem causes data to be read from or written to incorrect addresses in the memory.


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.

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, submit a request to 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.


To apply this hotfix, you must have Windows XP Service Pack 2 or a later service pack installed on the computer. For more information, 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 requirement

You must restart the 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.
Windows XP with Service Pack 2, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatformSP requirement
Windows XP with Service Pack 3, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


For more information about URBs, visit the following Microsoft Web site: (
For more information about USB Device input/output (I/O) and data transfer types, visit the following Microsoft Web site: (
For more information about DRIVER_IRQL_NOT_LESS_OR_EQUAL, visit the following Microsoft Web site: (

  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
kbautohotfix kbexpertiseinter kbfix kbbug kbsurveynew kbqfe KB969238
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