The Computer Hangs If You Call LockWorkstation() While a Screen Saver Is Running
This article was previously published under Q321343
This article has been archived. It is offered "as is" and will no longer be updated.
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.
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 InformationTo 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 InformationA 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.
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, submit a request to 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. 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 22.214.171.124 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
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.
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 ProductFor 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
Article ID: 321343 - Last Review: 10/24/2013 11:29:19 - Revision: 2.10
Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server, Microsoft Windows 2000 Professional Edition
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