Microsoft KB Archive/917587

= FIX: Memory mapping leaks when a 32-bit process runs on a Windows Server 2003 Service Pack 1 (SP1)-based computer =

Article ID: 917587

Article Last Modified on 10/11/2007

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APPLIES TO

 Microsoft Windows Server 2003 SP1, when used with:  Microsoft Windows Server 2003, Standard x64 Edition

 Microsoft Windows Server 2003, Enterprise x64 Edition

 Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems 

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SYMPTOMS
On a computer that is running Microsoft Windows Server 2003 Service Pack 1 (SP1), a 32-bit process must create a thread as soon as there is a printing operation. If this process runs in a Windows on Windows 64 (WOW64) environment, the 4 megabytes (MB) of memory that maps in the user mode address space leaks during every printing operation. These leaks continue even after a printing thread successfully ends. Therefore, when the process runs out of the user mode address space, you may experience unexpected errors because of the memory allocation failure.

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CAUSE
This problem occurs because the 4 MB of memory mapping is created in the user mode address space when a thread calls the CreateDC API for a print device. Then, this is mapped when the thread ends.

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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 How to obtain the latest service pack for Windows Server 2003

Prerequisites
To apply this hotfix, you must have Windows Server 2003 Service Pack 1 installed on the computer.

Restart requirement
You must restart your 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, Itanium-based versions with Service Pack 1
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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Windows Server 2003 Service Pack 2.

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MORE INFORMATION
For more information, 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

Additional query words: Content Maintenance 54366

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver kbwinserv2003sp2fix KB917587

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