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This article has been archived.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 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
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.
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: