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Permissions are incorrectly changed to 777 if the root user uses the chown command or the chgrp command on an item in an NFS share on a Windows Server 2003 R2-based computer

View products that this article applies to.


A network file system (NFS) share is configured on a computer that is running Microsoft Windows Server 2003 R2. The root user of a Linux-based system or of a UNIX-based system uses one of the following commands on a directory or on a file in this NFS share:
  • chown
  • chgrp
In this situation, the Linux permissions or the UNIX permissions of the directory or of the file are incorrectly changed to 777 (rwxrwxrwx).

You experience this problem if the following conditions are true:
  • The NFS share allows for read and write access.
  • The NFS share allows for root access.
  • Simple User Name Mapping is configured.
  • Advanced User Name Mapping is configured, and the Linux root account or the UNIX root account is mapped to the Windows Administrator account.

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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.


To apply this hotfix, you must have Windows Server 2003 R2 Service Pack 1 (SP1) or a later service pack installed. For more information, 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

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, 32-bit (x86-based) versions
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Windows Server 2003 R2, 64-bit x64-based versions
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Windows Storage Server 2003
File nameFile versionFile sizeDateTimePlatform
Nfssvr.sys8.0.2254.20448,89625-Feb-200816:24Not Applicable
Windows Services for UNIX 3.5
File nameFile versionFile sizeDateTimePlatform
Nfssvr.sys8.0.2254.20448,89620-Mar-200817:06Not Applicable

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

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More information

For more information about the terms that are used to describe software updates, 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

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Keywords: kbautohotfix, kbbug, kbfix, kbHotfixServer, kbqfe, KB933397

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Article Info
Article ID : 933397
Revision : 3
Created on : 10/8/2011
Published on : 10/8/2011
Exists online : False
Views : 360