Microsoft KB Archive/328934

= Windows XP stops responding (hangs) when you log off the computer if more than one user is logged on =

Article ID: 328934

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional for Itanium-based systems
 * Microsoft Windows XP Professional for Itanium-based systems

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This article was previously published under Q328934





SYMPTOMS
If more than one user is logged on to your Microsoft Windows XP-based computer and if the Fast User Switching feature is enabled, Windows may unexpectedly stop responding (hang) when you log off. The welcome screen is not displayed, and the screen is black.

If you press any one of the following keyboard shortcuts, nothing happens:
 * CTRL+ALT+DEL
 * CTRL+SHIFT+ESC
 * Windows logo key+L



CAUSE
This problem may occur if a program is running in the context of another user who is logged on to the computer. For example, this problem may occur if all the following conditions are true, in the order that they are presented in:
 * You log on to the computer as one user.
 * You switch to another user without logging off as the first user.
 * You run a program in the context of the first user.
 * You log off the computer as the second user.

In this situation, a process is not ended correctly in Windows XP.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

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
No prerequisites are required.

Restart requirement
You must restart your 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) 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 tool in Control Panel.

Windows XP
Date        Time   Version        Size     File name

29-Jan-2004 18:31  5.1.2600.1331   32,768  Cfgbkend.dll 29-Jan-2004 18:31  5.1.2600.1331   33,792  Pchsvc.dll 29-Jan-2004 18:31  5.1.2600.1331   39,424  Racpldlg.dll 29-Jan-2004 18:31  5.1.2600.1331   44,032  Regapi.dll 29-Jan-2004 18:31  5.1.2600.1331   41,472  Safrslv.dll 29-Jan-2004 18:31  5.1.2600.1337   16,384  Seclogon.dll 29-Jan-2004 18:31  5.1.2600.1337  200,192  Termsrv.dll 29-Jan-2004 18:31  5.1.2600.1331   88,064  Tscfgwmi.dll 28-Jan-2004 23:57  5.1.2600.1337  586,752  Xpsp2res.dll 10-Jan-2004 12:48  5.1.2600.1331  130,560  Sessmgr.exe

Windows XP, 64-bit editions
Date        Time   Version        Size     File name     Platform -- 29-Jan-2004 17:51  5.1.2600.1331  104,448  Cfgbkend.dll  IA-64 29-Jan-2004 17:51  5.1.2600.1331  110,592  Pchsvc.dll    IA-64 29-Jan-2004 17:51  5.1.2600.1331  106,496  Racpldlg.dll  IA-64 29-Jan-2004 17:51  5.1.2600.1331  127,488  Regapi.dll    IA-64 29-Jan-2004 17:51  5.1.2600.1331  111,616  Safrslv.dll   IA-64 29-Jan-2004 17:51  5.1.2600.1337   46,592  Seclogon.dll  IA-64 29-Jan-2004 17:51  5.1.2600.1337  622,592  Termsrv.dll   IA-64 29-Jan-2004 17:51  5.1.2600.1331  326,144  Tscfgwmi.dll  IA-64 29-Jan-2004 18:31  5.1.2600.1331   44,032  Wregapi.dll   x86 29-Jan-2004 18:31  5.1.2600.1337   16,384  Wseclogon.dll x86 28-Jan-2004 23:57  5.1.2600.1337  586,752  Wxpsp2res.dll x86 28-Jan-2004 23:57  5.1.2600.1337  586,240  Xpsp2res.dll  IA-64 10-Jan-2004 11:40  5.1.2600.1331  423,424  Sessmgr.exe   IA-64



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Microsoft Windows XP Service Pack 2.



MORE INFORMATION
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

For additional information about standard terminology that is used to describe Microsoft 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

Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbqfe kbbug kbfix kbwinxppresp2fix KB328934

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