FIX: ASP.NET performance data may not appear as expected when you use System Monitor to monitor ASP.NET performance data on a computer where the .NET Framework 1.1 or the .NET Framework 1.1 SP1 is installed

View products that this article applies to.

SYMPTOMS

When you use System Monitor to monitor Microsoft ASP.NET performance data on a computer where the Microsoft .NET Framework 1.1 or the Microsoft .NET Framework 1.1 Service Pack 1 (SP1) is installed, ASP.NET performance data may not appear as expected.

Typically, this problem occurs when multiple clients query the computer where the .NET Framework 1.1 or the .NET Framework 1.1 SP1 is installed for ASP.NET performance data.

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CAUSE

This problem occurs because of a race condition in Aspnet_isapi.dll. When this race condition occurs, a thread is not created for the client computer to query for ASP.NET performance data.

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RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 (http://support.microsoft.com/kb/889100/ ) How to obtain the latest service pack for Windows Server 2003

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Software update information

Prerequisites

To apply this software update, you must have the .NET Framework 1.1 SP1 installed on the computer.

Restart requirement

You do not have to restart the computer after you apply this software update.

Software update replacement information

This software update does not replace any other software updates.

File information

The English version of this software update 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 tool in Control Panel.

   Date         Time   Version        Size       File name
   --------------------------------------------------------------
   19-May-2005  20:57  1.1.4322.2325    258,048  Aspnet_isapi.dll  
   19-May-2005  20:57  1.1.4322.2325     32,768  Aspnet_wp.exe       
   19-May-2005  20:36  1.1.4322.2325  1,261,568  System.web.dll

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Server 2003 Service Pack 2.

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