Error message after you enable the ETW trace log on a computer that is running Windows XP: "0x0000007E (0xC0000005, parameter2, parameter3, parameter4 ) SYSTEM_THREAD_EXCEPTION_NOT_HANDLED"

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On a computer that is running Microsoft Windows XP, you may receive the following Stop error message after you enable the Event Tracing for Windows (ETW) trace log for an application:
0x0000007E (0xC0000005, parameter2, parameter3, parameter4) SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
The problem does not occur if the same application runs on a computer that is running Windows Server 2003.

  • The four parameters in the Stop error message vary depending on the computer's configuration. However, the first parameter is always 0xC0000005.
  • Not all "Stop 0x0000007E" error messages are caused by this problem.
This problem occurs because Event Tracing for Windows does not correctly manage its allocated buffer. Therefore, the operating system accesses an invalid memory space.

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.


To apply this hotfix, you must have Windows XP Service Pack 2 installed.
322389 How to obtain the latest Windows XP service pack

Restart requirement

You have to 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.
File nameFile versionFile sizeDateTimePlatformSP requirement
To work around this problem, disable the Event Tracing for Windows (ETW) trace log.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Article ID: 940322 - Last Review: 08/29/2007 14:24:13 - Revision: 2.1

Microsoft Windows XP Professional, Microsoft Windows XP Home Edition

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