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q154087.txt
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1997-06-25
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DOCUMENT:Q154087
TITLE :Access Violation in LSASS.EXE Due to Incorrect Buffer Size
PRODUCT :Microsoft Windows NT
PROD/VER:4.00
OPER/SYS:WINDOWS
KEYWORDS:kbbug4.00 kberrmsg kbfile kbfix4.00 ntsecurity NTSrvWkst ntstop
--------------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT Workstation version 4.0 Service Pack 3
- Microsoft Windows NT Server version 4.0 Service Pack 3
--------------------------------------------------------------------------
SYMPTOMS
========
While running Windows NT, you may receive an Access Violation error message
in Lsass.exe. After this error occurs, you cannot logon locally and the
administrative tools that rely on LSA/LSARPC (such as Event Viewer and
Server Manager) do not function.
CAUSE
=====
The failure occurs when a remote client connects to the Local Security
Authority over a named pipe and passes an incorrect buffer size (fragment
length).
RESOLUTION
==========
Microsoft has updated Lsasrv.dll to correct this problem and posted the
updated version to the following Internet location:
NOTE: Service Pack 3 must be applied to Windows NT 4.0 prior to applying
this fix.
ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/NT40/
hotfixes-postSP3/lsa-fix
STATUS
======
Microsoft has confirmed this to be a problem in Windows NT version 4.0.
A supported fix is now available, but has not been fully regression-tested
and should be applied only to systems experiencing this specific problem.
Unless you are severely impacted by this specific problem, Microsoft
recommends that you wait for the next Service Pack that contains this fix.
Contact Microsoft Technical Support for more information.
Additional query words: prodnt 4.00
============================================================================
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
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