FIX: Aspnet_wp.exe is recycled because of a false deadlock

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Article ID: 328267 - View products that this article applies to.
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Occasionally, slow writes to a client cause Aspnet_wp to recycle on false deadlocks. When this occurs, the following event appears in the Application event log:
Event Type:     Error
Event Source:   ASP.NET 1.0.3705.0
Event Category: None
Event ID:       1003
Date:           4/24/2002
Time:           6:18:23 PM
User:           N/A
Computer:       <ComputerName>
aspnet_wp.exe  (PID: <xxx>) was recycled because it was suspected to be in a
deadlocked state. It did not send any responses for pending requests in the
last 180 seconds.


This behavior occurs if the ASP.NET worker process has been idle for the time that is specified for the responseDeadlockInterval configuration setting in the Machine.config file. This causes the deadlock detection mechanism in ASP.NET to recycle Aspnet_wp.exe. A slow write to the client may take longer than the value of responseDeadlockInterval.


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 .NET Framework 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:
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. The English version of this fix has the file attributes (or later) 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
   20-Sep-2002   17:49   1.0.3705.360     196,608   Aspnet_isapi.dll
   20-Sep-2002   17:49                     19,332   Aspnet_perf.ini
   20-Sep-2002   17:49   1.0.3705.360      24,576   Aspnet_regiis.exe
   20-Sep-2002   17:49   1.0.3705.360      28,672   Aspnet_wp.exe
   20-Sep-2002   17:49                         15   Smartnav.htm
   20-Sep-2002   17:49                      8,800   Smartnav.js
   20-Sep-2002   17:49                      7,003   Smartnavie5.js
   20-Sep-2002   17:49   1.0.3705.360   1,187,840   System.web.dll


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


Article ID: 328267 - Last Review: October 25, 2013 - Revision: 4.0
Applies to
  • Microsoft .NET Framework 1.0
  • Microsoft Visual Studio .NET 2002 Professional Edition
  • Microsoft Visual Studio .NET 2002 Enterprise Architect
  • Microsoft Visual Studio .NET 2002 Enterprise Developer
  • Microsoft Visual Studio .NET 2002 Academic Edition
kbnosurvey kbarchive kbhotfixserver kbqfe kbvs2002sp1sweep kbbug kbfix kbnetframe100presp3fix KB328267

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