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Q236981: "STOP 0x0000000A" Involving Scsiport.sys in Windows NT 4.0 SP5

Article: Q236981
Product(s): Microsoft Windows NT
Version(s): winnt:4.0 SP5
Operating System(s): 
Keyword(s): kbenv kberrmsg kbWinNT4sp6fix
Last Modified: 06-AUG-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0, Terminal Server Edition 
- Microsoft Windows NT Server version 4.0 SP5 
- Microsoft Windows NT Workstation version 4.0 SP5 
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IMPORTANT: This article contains information about modifying the registry. Before you 
modify the registry, make sure to back it up and make sure that you understand how to restore 
the registry if a problem occurs. For information about how to back up, restore, and edit the 
registry, click the following article number to view the article in the Microsoft Knowledge Base:

  Q256986 Description of the Microsoft Windows Registry

SYMPTOMS
========

You may experience a "STOP 0x0000000A" error message after applying Windows NT
4.0 Service Pack 5 (SP5) on a computer with an IBM ServerRaid SCSI adapter. This
problem can occur depending on the data value of the NumberOfRequests registry
value associated with the SCSI adapter.

Computers with other SCSI adapters may also experience similar symptoms.


CAUSE
=====

A change was made in SP5 to the algorithm that validates the data value of the
NumberOfRequests value stored in the following registry key:

  HKEY_LOCAL_MACHINE
  \SYSTEM\CurrentControlSet\Services\<DriverName>\Parameters\Device<n>

The algorithm in SP5 is flawed and does not return the correct results for any
value over 255. In particular, the error message listed above results if the
parameter is set to either 256 or 512.


RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or
the individual software update. For information on obtaining the latest service
pack, please go to:

- http://www.microsoft.com/windows/servicepacks/

-or-

- Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

For information on obtaining the individual software update, contact Microsoft
Product Support Services. 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


WORKAROUND
==========

WARNING: If you use Registry Editor incorrectly, you may cause serious problems
that may require you to reinstall your operating system. Microsoft cannot
guarantee that you can solve problems that result from using Registry Editor
incorrectly. Use Registry Editor at your own risk.

To work around this problem and obtain the expected results without applying this
hotfix, restrict the data value of the NumberOfRequests value to the range 16
through 255.

STATUS
======

Microsoft 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 Server version 4.0, Terminal Server Edition Service Pack 6.

MORE INFORMATION
================

Prior to SP5, the algorithm for validating this parameter is also flawed, but
not in such a way that a "STOP" error message results. In particular, values
between 256 and 512 are reduced to the range 16 through 255.

Additional query words:

======================================================================
Keywords          : kbenv kberrmsg kbWinNT4sp6fix 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400search kbWinNT400search kbWinNTW400sp5 kbWinNTSsearch kbWinNTS400sp5 kbWinNTS400search kbNTTermServ400 kbNTTermServSearch
Version           : winnt:4.0 SP5
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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