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FIX: Event ID: 1008 occurs after you apply security update MS07-040 on a computer that has the .NET Framework 1.0 installed

When you apply security update MS07-040 to a computer that has the Microsoft .NET Framework 1.0 installed, an Error event that resembles the following is logged in the event log every 2 to 5 minutes:
Event Type: Error
Event Source: Perflib
Event Category: None
Event ID: 1008
The Open Procedure for service "ASP.NET" in DLL "C:\WINNT\Microsoft.NET\Framework\Version\aspnet_perf.dll" failed. Performance data for this service will not be available. Status code returned is data DWORD 0.
This problem occurs because the Aspnet_perf.ini file is not updated by the MS07-040 security update.

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


You must have the .NET Framework 1.0 Service Pack 3 (SP3) installed to apply this hotfix.

Restart requirement

You do not 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 sizeDateTimePlatform
Aspnet_perf.iniNot Applicable513,50821-Aug-200721:55Not Applicable
Aspnet_perf2.iniNot Applicable510,71421-Aug-200721:56Not Applicable
Mscorlib.ldoNot Applicable10,43621-Aug-200721:42Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, 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 1.0 ms07-040

Article ID: 944746 - Last Review: 10/08/2011 12:24:00 - Revision: 2.0

  • Microsoft .NET Framework 1.0
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