DOCUMENT:Q237699  08-MAY-2002  [winnt]
TITLE   :Error Message: Stop 0x0000000A in ScsiPort.sys on SMP Systems
PRODUCT :Microsoft Windows NT
PROD/VER:winnt:4.0
OPER/SYS:
KEYWORDS:kbWinNT400PreSP7Fix

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

When you run a program that makes a ScsiBusScan() call (for example, Disk
Administrator), the following error message may be displayed on a blue screen:

   STOP 0x0000000A (0x0000000C, 0x0000000A, 0x00000001, 0x801de690)
   IRQL_NOT_LESS_OR_EQUAL
   Address 801de690 has base at 801de000 - scsiport.sys

NOTE: The fourth parameter may vary from system to system, but is always based in
Scsiport.sys.

CAUSE
=====

The problem may occur if there are multiple programs issuing the
IOCTL_SCSI_RESCAN_BUS I/O control at the same time. There is a race condition
that can cause the same request to get issued twice.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:

   http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

The English version of this fix should have the following file attributes or
later:

   Date     Time    Size     File name      Platform
   --------------------------------------------------
   9/1/99   7:14p   35,504   Scsiport.sys   Intel
   9/1/99   7:13p   56,400   Scsiport.sys   Alpha



STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0.


Additional query words:

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Keywords          : kbWinNT400PreSP7Fix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : winnt:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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