DOCUMENT:Q242366  20-MAY-2002  [winnt]
TITLE   :Denial of Service When Using Xenroll to Create Files
PRODUCT :Microsoft Windows NT
PROD/VER:WINDOWS:4.0,4.01,4.01 Service Pack 1,4.01 Service Pack 2,5; winnt:4.0
OPER/SYS:
KEYWORDS:kbWinNT4sp6fix

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0, Terminal Server Edition 
 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0 
 - Microsoft Windows NT Server, Enterprise Edition version 4.0 
 - Microsoft Internet Explorer versions 4.0, 4.01, 4.01 Service Pack 1, 4.01 Service Pack 2, 5 for Windows NT 4.0 
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SYMPTOMS
========

You can use Xenroll to create files with any name or write to the registry
without notifying users. If you use this ActiveX control for either purpose, you
may receive a "denial of service" error message if you use the control multiple
times.

RESOLUTION
==========

Windows NT Server or Workstation 4.0
------------------------------------

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


Windows NT Server 4.0, Terminal Server Edition
----------------------------------------------

To resolve this problem, obtain the latest service pack for 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 Server 4.0 Service Pack 6 and Windows NT Server 4.0, Terminal Server Edition
Service Pack 6.

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

The purpose of the Xenroll control is to create files and registry entries.
Because multiple organizations use this control, you cannot simply disable the
control.

The Xenroll control cannot overwrite files without user intervention.

Additional query words:

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Keywords          : kbWinNT4sp6fix 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch kbIEsearch kbZNotKeyword2 kbIENT400Search kbIE500Search kbZNotKeyword3 kbIE400WinNT400 kbIE401WinNT400 kbIE401WinNT400SP1 kbIE401WinNT400SP2 kbIE500WinNT400
Version           : WINDOWS:4.0,4.01,4.01 Service Pack 1,4.01 Service Pack 2,5; winnt:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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Copyright Microsoft Corporation 2002.