Windows 2000 Advanced Server May Stop Responding on Computers with More Than Eight Virtual CPUs

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When you restart a computer that is running Windows 2000 Advanced Server, the computer may stop responding (hang). When this problem occurs, only a text cursor appears in the upper-left corner of a blank screen after you restart the computer.
This problem occurs on computers that have CPUs that support symmetric multithreading. On computers with symmetric multithreading activated, each physical CPU is presented as two CPUs (one physical CPU and one virtual CPU). The problem that this article describes may occur on computers where the total number of CPUs (including the virtual CPUs) is more than eight.

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.

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, submit a request to 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.


There are no prerequisites for this hotfix.

Restart Requirement

You do not have to 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 tool in Control Panel.
   Date         Time   Version        Size    File name   -------------------------------------------------------   07-Aug-2003  17:48  5.0.2195.6801  83,456  Halaacpi.dll   07-Aug-2003  17:48  5.0.2195.6801  67,872  Halacpi.dll    07-Aug-2003  17:48  5.0.2195.6801  93,536  Halapic.dll    07-Aug-2003  17:48  5.0.2195.6801  84,288  Halmacpi.dll   07-Aug-2003  17:48  5.0.2195.6801  95,008  Halmps.dll 
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Article ID: 823748 - Last Review: 10/26/2013 19:09:28 - Revision: 2.5

Microsoft Windows 2000 Advanced Server

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