Programs that request lots of contiguous memory, such as one gigabyte or more, may fail with an unexpected error after you install security update 921883 on a computer that is running an x64-based version of Microsoft Windows Server 2003, Microsoft Windows Server 2003 with Service Pack 1 (SP1), or Microsoft Windows XP Professional x64 Edition. For example, programs such as Microsoft Business Solutions - Navision 3.7 may fail.

Note This problem only affects 32-bit programs. These 32-bit programs may run on computers that have any of the following operating systems installed:

•	A 32-bit version of Windows Server 2003 with SP1
•	Windows Server 2003 with SP1 for Itanium-based systems
•	x64-based versions of Windows Server 2003
•	Windows XP Professional x64 Edition

Native 64-bit programs are not affected.

For more information about security update 921883, click the following article number to view the article in the Microsoft Knowledge Base:

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Security update information

On September 12, 2006, security update 921883 (MS06-040) was updated to resolve this issue. The September 12, 2006 version of security update 921883 (MS06-040) supersedes the hotfix that is mentioned in this section.

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Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have one of the following operating systems installed:

•	Windows Server 2003 with SP1 (32-bit or Itanium-based)
•	An x64-based version of Windows Server 2003
•	Windows XP Professional x64 Edition

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 SP1, 32-bit versions

File name	File version	File size	Date	Time
Netapi32.dll	5.2.3790.2769	349,696	11-Aug-2006	10:15

Windows Server 2003, x64-based versions, and Windows XP Professional x64 Edition

File name	File version	File size	Date	Time	Platform	Service Branch
Netapi32.dll	5.2.3790.2769	603,136	11-Aug-2006	07:46	x64	SP1QFE
Wnetapi32.dll	5.2.3790.2769	349,696	11-Aug-2006	07:46	x86	SP1QFE

Windows Server 2003 SP1, Itanium-based versions

File name	File version	File size	Date	Time	Platform	Service Branch
Netapi32.dll	5.2.3790.2769	905,216	11-Aug-2006	07:47	IA-64	SP1QFE
Wnetapi32.dll	5.2.3790.2769	349,696	11-Aug-2006	07:47	x86	SP1QFE

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

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For more information about the terms that are used in this article, click the following article number to view the article in the Microsoft Knowledge Base:

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