Microsoft KB Archive/321343

= The Computer Hangs If You Call LockWorkstation While a Screen Saver Is Running =

Article ID: 321343

Article Last Modified on 2/22/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q321343



SYMPTOMS
If you call the LockWorkstation function from a screen saver (or while a screen saver is running), the computer locks as expected. However, the computer no longer responds to the CTRL+ALT+DELETE key combination. When this problem occurs, you must reset the computer.



CAUSE
This problem occurs because Winlogon enters a state in which secure attention sequence (SAS) key sequences are not processed. Other processes on the computer continue to run, and the computer continues to be accessible over the network.



Service Pack Information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

Hotfix Information
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

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

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later:

  Date         Time   Version        Size       File name --  03-May-2002  11:46  5.0.2195.5265     42,256  Basesrv.dll 03-May-2002 11:46  5.0.2195.5684    222,480  Gdi32.dll 03-May-2002 11:46  5.0.2195.4928    708,880  Kernel32.dll 25-Jun-2001 19:17  3.10.0.103        47,808  User.exe 03-May-2002 11:46  5.0.2195.4314    402,192  User32.dll 03-May-2002 11:46  5.0.2195.5644    369,936  Userenv.dll 25-Apr-2002 09:16  5.0.2195.5673  1,641,968  Win32k.sys 03-May-2002 11:31  5.0.2195.5731    178,960  Winlogon.exe 03-May-2002 11:46  5.0.2195.4602    243,472  Winsrv.dll 03-May-2002 11:46  5.0.2195.4928    708,880  Kernel32.dll 03-May-2002 11:46  5.0.2195.5673  1,641,968  Win32k.sys 03-May-2002 11:46  5.0.2195.4602    243,472  Winsrv.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.



MORE INFORMATION
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

Keywords: kbhotfixserver kbqfe kbsecurity kbwin2ksp4fix kbbug kbfix kbwin2000presp4fix KB321343

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