Microsoft KB Archive/929141

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Article ID: 929141

Article Last Modified on 12/3/2007


  • Microsoft Windows Services for UNIX 3.5


On a Windows XP SP2-based computer that is running Microsoft Windows Services for UNIX 3.5, when you enable Data Execution Prevention (DEP), Interix applications crash.

Note This problem also occurs on Windows Server 2003 systems that are running Windows Services for UNIX 3.5.


This problem occurs because some executable codes that the Interix applications add in the stack are stopped when DEP is enabled.


Hotfix information

A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that this article describes. Apply this hotfix only to systems that are experiencing this specific problem.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:


To apply this hotfix, you must have Windows Services for UNIX 3.5 installed on the computer.

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.

File name File version File size Date Time Platform Not Applicable 28,672 03-Jul-2007 09:33 Not Applicable Not Applicable 10,240 03-Jul-2007 09:33 Not Applicable
Posix.exe 8.0.1969.57 130,048 03-Jul-2007 09:33 x86
Psxdll.dll 8.0.1969.57 345,088 03-Jul-2007 09:33 x86
Psxrun.exe 8.0.1969.57 104,448 03-Jul-2007 09:33 x86
Psxss.exe 8.0.1969.57 781,312 03-Jul-2007 09:33 x86


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


For more information about Data Execution Prevention (DEP), click the following article number to view the article in the Microsoft Knowledge Base:

875352 A detailed description of the Data Execution Prevention (DEP) feature in Windows XP Service Pack 2, Windows XP Tablet PC Edition 2005, and Windows Server 2003

For more information about software update terminology, 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

Keywords: kbexpertisebeginner kbhotfixserver kbexpertiseadvanced kbqfe kbfix kbbug KB929141