Microsoft KB Archive/933712

= FIX: Error message when you try to run many &quot;setuser&quot; function calls at the same time on a computer that is running Subsystem for UNIX-based Applications in Windows Server 2003 R2: &quot;Operation not permitted&quot; =

Article ID: 933712

Article Last Modified on 7/24/2007

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APPLIES TO


 * Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Datacenter x64 Edition
 * Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Enterprise x64 Edition
 * Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003 R2 Standard x64 Edition

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SYMPTOMS
Consider the following scenario. You have a computer that is running Subsystem for UNIX-based Applications (SUA) in Microsoft Windows Server 2003 R2. You try to run many setuser function calls at the same time. In this scenario, you receive the following error message:

Operation not permitted.



CAUSE
This problem occurs because of a race condition that may occur in the Portable Operating System Interface (POSIX) subsystem. If many setuser function calls are made at the same time, some setuser function calls may not receive sufficient rights to operate successfully.



Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

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:

http://go.microsoft.com/?linkid=6294451

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:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
To apply this hotfix, you must have the following installed:  One of the following service packs:  Windows Server 2003 Service Pack 1 (SP1) Windows Server 2003 Service Pack 2 (SP2)

For more information about how to obtain the latest service pack for Windows Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

 SUA

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.

Windows Server 2003 R2, 64-bit versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

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MORE INFORMATION
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

Additional query words: SFU API

Keywords: kbbug kbfix kbhotfixserver kbqfe kbpubtypekc KB933712

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