Access Violation in Winlogon with Third-Party Gina.dll

ID: Q180854

The information in this article applies to:

Microsoft Windows NT Workstation version 4.0 SP3
Microsoft Windows NT Server version 4.0 SP3
Microsoft Windows NT Server, Enterprise Edition version 4.0
Microsoft Windows NT Server version 4.0, Terminal Server Edition

SYMPTOMS

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.

CAUSE

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.

RESOLUTION

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, please see the following article in the Microsoft Knowledge Base:

Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed this to be 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.

Additional query words: accgina msgina hookproc

Keywords : kb3rdparty NT4SP4Fix kbfix4.00.sp4 kbbug4.00.sp3 NTSrvWkst
Version : WinNT:4.0
Platform : winnt
Issue type : kbbug