Microsoft KB Archive/904705

= FIX: You may experience high CPU usage and the server may appear to stop responding in applications that were built by using the .NET Framework 1.1 =

Article ID: 904705

Article Last Modified on 2/2/2006

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APPLIES TO


 * Microsoft .NET Framework 1.1

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SYMPTOMS
In applications that were built by using the Microsoft .NET Framework 1.1, you may experience the following symptoms:
 * High CPU usage
 * Slow application response time

Additionally, the server may appear to stop responding.



CAUSE
These symptoms may occur if the application makes the following kinds of excessive calls:
 * Cross-application domain calls
 * ThreadPool callbacks
 * Reverse PInvoke calls
 * COM interop calls

These excessive calls may cause a context switch to occur. This context switch uses a critical section. In an application that is making these excessive calls, that critical section can become a point of contention.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft .NET Framework 1.1 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

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.

Prerequisites
Microsoft .NET Framework 1.1 Service Pack 1 (SP1)

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 tool in Control Panel.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
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

Keywords: kbbug kbfix kbqfe kbhotfixserver KB904705

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