Microsoft KB Archive/943828

= Error message when WMI queries against the CIM_DataFile class after you log on to a Windows XP SP2-based computer by using a non-administrative user account: &quot;SWbemServicesEx: Access denied&quot; =

Article ID: 943828

Article Last Modified on 11/13/2007

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APPLIES TO


 * Microsoft Windows XP Service Pack 2

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SYMPTOMS
Consider the following scenario:
 * You log on to the console session of a Windows XP Service Pack 2 (SP2)-based computer by using a non-administrative user account.
 * Windows Management Instrumentation (WMI) queries against the CIM_DataFile class. This query runs under the local system context.

In this scenario, all the WMI queries fail. Additionally, you receive an error message that resembles the following:

SWbemServicesEx: Access denied



CAUSE
After you log on to the console session of a Windows XP SP2-based computer by using a non-administrative user account, Windows may be unable to revert to the local system context when WMI code runs under the local system context. Therefore, the WMI code can run only under the limited permissions of the user.



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 Windows XP 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 install this hotfix, you must have Windows XP Service Pack 2 installed.

Restart requirement
You have to restart your computer if the Win32 provider (Cimwin32.dll) is loaded in a WMI Provider Host process (Wmiprvse.exe).

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 XP with SP2, x86-based versions


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



MORE INFORMATION
For more information about the CIM_DataFile class, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/aa387236.aspx

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

Keywords: kbexpertiseadvanced kbfix kbpubtypekc kbqfe kbhotfixserver KB943828

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