The data that the QueryDosDeviceA function returns is truncated in Windows Server 2003

Support for Windows Server 2003 ended on July 14, 2015

Microsoft ended support for Windows Server 2003 on July 14, 2015. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article has been archived. It is offered "as is" and will no longer be updated.
The data that the QueryDosDeviceA function returns is truncated.
This issue occurs if the following conditions are true:
  • The QueryDosDeviceA function that contains NULL as the lpDeviceName parameter is called on a computer that contains more than 32 KB of the MS-DOS-based devices' ASCII characters.
  • The DefineDosDevice function defines the MS-DOS-based devices.

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.


No prerequisites are required.

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 tool in Control Panel.
Windows Server 2003 32-bit editions
   Date         Time   Version           Size     File name        Platform   ------------------------------------------------------------------------   24-Aug-2004  20:21  5.2.3790.206      988,672  Kernel32.dll     x86   24-Aug-2004  20:21  5.2.3790.196      222,208  Termsrv.dll      x86   24-Aug-2004  20:21  5.2.3790.193      52,224   Winsta.dll       x86
Windows Server 2003 64-bit edition
   Date         Time   Version         Size       File name        Platform   ------------------------------------------------------------------------   24-Aug-2004  07:47  5.2.3790.206    1,850,880  Kernel32.dll     IA-64   24-Aug-2004  07:47  5.2.3790.196    621,568    Termsrv.dll      IA-64   24-Aug-2004  07:47  5.2.3790.193    141,824    Winsta.dll       IA-64   24-Aug-2004  07:51  5.2.3790.206    934,912    Wkernel32.dll    x86   24-Aug-2004  07:51  5.2.3790.193    52,224     Wwinsta.dll      x86
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For additional 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

Article ID: 872965 - Last Review: 01/17/2015 17:46:24 - Revision: 2.9

Microsoft Windows Server 2003, Enterprise x64 Edition, Microsoft Windows Server 2003, Enterprise Edition (32-bit x86), Microsoft Windows Server 2003, Web Edition, Microsoft Windows Server 2003, Standard Edition (32-bit x86)

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