DOCUMENT:Q156655  09-AUG-2001  [winnt]
TITLE   :Memory Leak and STOP Screens Using Intermediate NDIS Drivers
PRODUCT :Microsoft Windows NT
PROD/VER:winnt:4.0
OPER/SYS:
KEYWORDS:kbfile kbnetwork kbWinNT400sp4fix

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0 
 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0, Terminal Server Edition 
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SYMPTOMS
========

When intermediate (layered) NDIS miniport drivers are in use on Windows NT 4.0,
you may experience one or both of the following:

 - A memory leak in kernel non-paged pool memory. Over time, memory may be
   depleted to the point where system stability is compromised.

 - You may receive the following blue-screen STOP error message with parameters
   that indicate the bad instruction is in the Ndis.sys driver:

   STOP: 0x0000000A (0x00000014, 0x00000002, 0x00000000, 0xFCBA1062).
   IRQL_NOT_LESS_OR_EQUAL (* Address fcba1062 has base at fcb95000 - NDIS.SYS)

CAUSE
=====

Intermediate drivers are typically add-ons that layer themselves over hardware
drivers as a filter to provide additional functionality, such as data encryption
or other value added services. The Ndis.sys driver included in Windows NT 4.0
has been found to have some deficiencies when such intermediate drivers are
used.


RESOLUTION
==========

You can work around this problem by removing any unnecessary filter drivers.

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


For your convenience, the English version of this post-SP3 hotfix has been posted
to the following Internet location. However, Microsoft recommends that you
install Windows NT 4.0 Service Pack 4 to correct this problem.

   ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/NT40/hotfixes-postSP3/ndis-fix

NOTE: Service Pack 3 must be applied to Windows NT 4.0 prior to applying this
fix.

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: bug trap

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Keywords          : kbfile kbnetwork kbWinNT400sp4fix 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch
Version           : winnt:4.0
Issue type        : kbbug
Solution Type     : kbfix

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