FIX: Actual property values of memory properties differ from the values that you manually set when you enable application pool recycling based on memory usage in IIS 6.0 (923197)

SYMPTOMS

Consider the following scenario. You have a Microsoft Windows Server 2003 Service Pack 1 (SP1)-based computer that is running Microsoft Internet Information Services (IIS) 6.0. You configure IIS to enable application pool recycling based on memory usage. In this scenario, you experience one of the following problems:

Problem 1

When you manually set the value of the PeriodicRestartMemory property to a value that is more than 4194303 bytes, the actual PeriodicRestartMemory property value reverts to 512 MB.

Problem 2

When you use IIS Manager to set the value of the Maximum virtual memory property to a value that is more than 4096 MB, the actual Maximum virtual memory property value reverts to 512 MB.

Problem 3

When you set the value of the PeriodicRestartPrivateMemory property to a value that is more than 3145728 bytes, the actual PeriodicRestartPrivateMemory property value reverts to 0.

Problem 4

When you use IIS Manager to set the value of the Maximum virtual memory property to a value that is more than 3072 MB, the actual Maximum virtual memory property value reverts to 0.

Additionally, when you experience Problem 1 or Problem 2, the following error message is logged in the system event log:

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1041
Description:
The 'Application Pool' 'DefaultAppPool' failed range validation for property 'PeriodicRestartMemory'. The configured value 'VirtualMemorySize' is outside of the range '0' to '4194303'. The value will default to '512000'.

Note VirtualMemorySize represents the virtual memory size that you configure.

When you experience Problem 3 or Problem 4, the following error message is logged in the system event log:

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1041
Description:
The 'Application Pool' 'DefaultAppPool' failed range validation for property 'PeriodicRestartPrivateMemory'. The configured value 'VirtualMemorySize' is outside of the range '0' to '3145728'. The value will default to '0'.

Note VirtualMemorySize represents the virtual memory size that you configured.

RESOLUTION

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 Windows Server 2003 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

To apply this hotfix, you must have Windows Server 2003 SP1 installed on the computer.

Restart requirement

You must 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.Windows Server 2003, 32-bit versions

File name	File version	File size	Date	Time	Platform
Iisw3adm.dll	6.0.3790.2771	216,064	16-Aug-2006	13:51	x86

Windows Server 2003, x64-based versions

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Iisw3adm.dll	6.0.3790.2771	312,320	15-Aug-2006	23:55	x64	SP1	Not Applicable
Wiisw3adm.dll	6.0.3790.2771	216,064	15-Aug-2006	23:55	x86	SP1	WOW

Windows Server 2003, Itanium-based versions

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Iisw3adm.dll	6.0.3790.2771	605,184	15-Aug-2006	23:53	IA-64	SP1	Not Applicable
Wiisw3adm.dll	6.0.3790.2771	216,064	15-Aug-2006	23:53	x86	SP1	WOW