Article ID: 180854 - View products that this article applies to.
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When you attempt to run the screen saver after a period of inactivity, Winlogon.exe encounters an access violation, and a STOP 0xC000021A message appears on the screen.
This problem only occurs if a third-party Gina.dll file is installed on your computer and if the updated GINA, or any of the libraries with which it is linked, performs window hooking.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/152734/EN-US/ )How to Obtain the Latest Windows NT 4.0 Service Pack
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.
Article ID: 180854 - Last Review: October 7, 2013 - Revision: 3.2