Hang in Winlogon on Workstation Locked Dialog Box (189291)
The information in this article applies to:
- Microsoft Windows NT Server 4.0 Terminal Server Edition
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Workstation 4.0
- Microsoft Platform Software Development Kit (SDK) 1.0
This article was previously published under Q189291 SYMPTOMS
A Windows NT computer may appear to stop responding (hang) in the
Workstation Locked dialog box, but you will still be able to move the mouse
and access the computer from the network.
CAUSE
This problem can occur when running a filter Gina.dll. This problem is
caused by a race condition in Winlogon wherein Secure Attention Sequence
(SAS) messages are disabled and not reenabled.
RESOLUTIONTo 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:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
STATUSMicrosoft 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.MORE INFORMATION
A race condition resulting in a computer that quits responding exists in
Winlogon if a custom Gina.dll's WlxLoggedOnSas function immediately returns
with WLX_SAS_ACTION_LOCK_WKSTA.
| Modification Type: | Minor | Last Reviewed: | 9/23/2005 |
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| Keywords: | kbHotfixServer kbQFE kbbug kbfix KB189291 |
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