Error message when you run a program that uses the QueryDosDeviceA function: “ERROR_MORE_DATA”

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Article ID: 927893 - View products that this article applies to.
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SYMPTOMS

You define a multibyte string for an MS-DOS device name. Then, you run a program that uses the QueryDosDeviceA function to retrieve a list of MS-DOS devices. In this scenario, you receive the following error message:
ERROR_MORE_DATA
This problem may occur even if you allocate a sufficient buffer size.

CAUSE

This problem occurs because the QueryDosDeviceA function does not consider multibyte strings during string conversion from UNICODE to ANSI.

RESOLUTION

To resolve this problem, install the hotfix that is mentioned in the following Microsoft Knowledge Base article:
931305 Error message when you run a program that uses the QueryDosDeviceA function: “ERROR_MORE_DATA”

STATUS

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

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

Properties

Article ID: 927893 - Last Review: October 11, 2007 - Revision: 2.5
APPLIES TO
  • Microsoft Windows Server 2003 Service Pack 1, when used with:
    • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
    • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
    • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
  • Microsoft Windows Server 2003 Service Pack 2, when used with:
    • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
    • Microsoft Windows Server 2003, Datacenter x64 Edition
    • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
    • Microsoft Windows Server 2003, Enterprise x64 Edition
    • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
    • Microsoft Windows Server 2003, Standard x64 Edition
Keywords: 
kbwinserv2003postsp2fix kberrmsg kbprb kbfix kbbug kbpubtypekc kbqfe kbexpertiseadvanced KB927893

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