An application that uses the VDMEnumProcessWOW function to enumerate virtual DOS machines returns no output or incorrect output on a computer that is running a 32-bit version of Windows Vista

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Article ID: 953347 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario. You develop an application that uses the VDMEnumProcessWOW function to enumerate virtual DOS machines (VDMs) that are running 16-bit Windows tasks. However, when the application runs on a computer that is running a 32-bit version of Windows Vista, the application returns no output. Or, the application returns incorrect output.

For example, you may experience this problem when you use the application to return a list of 16-bit Notepad instances.

RESOLUTION

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:
http://support.microsoft.com/contactus/?ws=support
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 Windows Vista or Windows Vista Service Pack 1 installed.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use this hotfix, you do not have to make any changes to the registry.

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 Vista, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Vdmdbg.dll6.0.6000.2084317,40828-May-200803:18x86
Package_1_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78028-May-200816:34Not applicable
Package_2_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,94728-May-200816:34Not applicable
Package_3_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78528-May-200816:34Not applicable
Package_4_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78528-May-200816:34Not applicable
Package_5_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78528-May-200816:34Not applicable
Package_6_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78128-May-200816:34Not applicable
Package_for_kb953347_client_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42628-May-200816:34Not applicable
Package_for_kb953347_client_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,36728-May-200816:34Not applicable
Package_for_kb953347_client~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,71328-May-200816:34Not applicable
Package_for_kb953347_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42128-May-200816:34Not applicable
Package_for_kb953347_sc~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42328-May-200816:34Not applicable
Package_for_kb953347_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42528-May-200816:34Not applicable
Package_for_kb953347_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43128-May-200816:34Not applicable
Package_for_kb953347_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42228-May-200816:34Not applicable
Package_for_kb953347_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43028-May-200816:34Not applicable
Package_for_kb953347_winpe_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42028-May-200816:34Not applicable
Package_for_kb953347_winpe~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42428-May-200816:34Not applicable
Update.mumNot applicable3,57128-May-200816:34Not applicable
X86_1230674f8a88d68c64ebbf8f7a0e059f_31bf3856ad364e35_6.0.6000.20843_none_d7e9c98d952391bf.manifestNot applicable70028-May-200816:34Not applicable
X86_microsoft-windows-ntvdm-vdmdbg_31bf3856ad364e35_6.0.6000.20843_none_4d483ff89fc7aa8b.manifestNot applicable3,42028-May-200803:33Not applicable
Windows Vista SP1, x86-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Vdmdbg.dll6.0.6001.2218817,40828-May-200803:22x86
Package_1_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78028-May-200816:34Not applicable
Package_2_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,94728-May-200816:34Not applicable
Package_3_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78528-May-200816:34Not applicable
Package_4_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78528-May-200816:34Not applicable
Package_5_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78528-May-200816:34Not applicable
Package_6_for_kb953347~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,78128-May-200816:34Not applicable
Package_for_kb953347_client_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42628-May-200816:34Not applicable
Package_for_kb953347_client_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,36728-May-200816:34Not applicable
Package_for_kb953347_client~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,71328-May-200816:34Not applicable
Package_for_kb953347_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42128-May-200816:34Not applicable
Package_for_kb953347_sc~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42328-May-200816:34Not applicable
Package_for_kb953347_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42528-May-200816:34Not applicable
Package_for_kb953347_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43128-May-200816:34Not applicable
Package_for_kb953347_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42228-May-200816:34Not applicable
Package_for_kb953347_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,43028-May-200816:34Not applicable
Package_for_kb953347_winpe_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42028-May-200816:34Not applicable
Package_for_kb953347_winpe~31bf3856ad364e35~x86~~6.0.1.0.mumNot applicable1,42428-May-200816:34Not applicable
Update.mumNot applicable3,57128-May-200816:34Not applicable
X86_66864717409d37beb1f28bc5beba5e8a_31bf3856ad364e35_6.0.6001.22188_none_f3950db01bdcd860.manifestNot applicable70028-May-200816:34Not applicable
X86_microsoft-windows-ntvdm-vdmdbg_31bf3856ad364e35_6.0.6001.22188_none_4f083e7a9d0a2ccc.manifestNot applicable3,42028-May-200803:48Not applicable

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: 953347 - Last Review: October 8, 2011 - Revision: 2.0
APPLIES TO
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Vista Service Pack 1
Keywords: 
kbautohotfix kbexpertiseadvanced kbfix kbqfe KB953347

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