DOCUMENT:Q196616  20-MAY-2002  [iis]
TITLE   :Deadlock When Updating ASP Pages on a Multiprocessor Server
PRODUCT :Internet Information Server
PROD/VER:winnt:4.0
OPER/SYS:
KEYWORDS:kbDSupport kbiis400bug kbOSWinNT400sp5fix

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Internet Information Server version 4.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

When an ASP application is updated on a dual processor server, there is a
possibility that the Internet Information Server (IIS) will deadlock and the
service will stop servicing requests. The only way to stop IIS is to restart the
server.

CAUSE
=====

Two IIS threads are executing on each of the system's processors. Each thread is
waiting on the other thread to complete, causing the deadlock.


RESOLUTION
==========

A supported fix that corrects this problem is now available from Microsoft, but
has not been fully regression tested and should be applied only to systems
experiencing this specific problem. If you are not severely affected by this
specific problem, Microsoft recommends that you wait for the next Windows NT
service pack.

To resolve this problem immediately, 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

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

   Date      Time       Size    File Name     Platform
   ---------------------------------------------------
   11/30/98  05:54p    27,696   Admwprox.dll   (x86)
   11/30/98  05:56p   326,384   Asp.dll
   11/30/98  05:54p    43,456   Coadmin.dll
   11/30/98  05:55p    11,168   Ftpctrs2.dll
   11/30/98  05:55p    81,376   Ftpsvc2.dll
   11/30/98  05:54p    10,224   Iisfecnv.dll
   11/30/98  05:54p    61,920   Iislog.dll
   11/30/98  05:54p    16,848   Infoadmn.dll
   11/30/98  05:54p   184,192   Infocomm.dll
   11/30/98  05:54p     9,584   Infoctrs.dll
   11/30/98  05:53p    47,936   Isatq.dll
   11/30/98  05:54p    29,520   Iscomlog.dll
   11/30/98  05:54p    13,856   Lonsint.dll
   11/30/98  05:54p     8,336   Lonsiw95.dll
   11/30/98  05:54p    71,232   Metadata.dll
   11/30/98  05:54p     7,488   Rpcref.dll
   11/30/98  05:54p    12,592   Spud.sys
   11/30/98  05:54p    18,032   Svcext.dll
   11/30/98  05:55p    14,752   W3ctrs.dll
   11/30/98  05:55p   227,392   W3svc.dll
   11/30/98  05:54p    55,456   Wam.dll

   11/30/98  05:58p    49,424   Admwprox.dll  (Alpha)
   11/30/98  06:00p   546,064   Asp.dll
   11/30/98  05:58p    77,072   Coadmin.dll
   11/30/98  05:59p    17,168   Ftpctrs2.dll
   11/30/98  05:59p   126,224   Ftpsvc2.dll
   11/30/98  05:58p    17,680   Iisfecnv.dll
   11/30/98  05:58p   110,864   Iislog.dll
   11/30/98  05:58p    25,872   Infoadmn.dll
   11/30/98  05:58p   302,864   Infocomm.dll
   11/30/98  05:58p    15,120   Infoctrs.dll
   11/30/98  05:57p    82,704   Isatq.dll
   11/30/98  05:58p    45,840   Iscomlog.dll
   11/30/98  05:58p    23,312   Lonsint.dll
   11/30/98  05:58p    13,584   Lonsiw95.dll
   11/30/98  05:57p   131,856   Metadata.dll
   11/30/98  05:58p    12,048   Rpcref.dll
   11/30/98  05:58p    20,912   Spud.sys
   11/30/98  05:58p    29,456   Svcext.dll
   11/30/98  05:59p    21,264   W3ctrs.dll
   11/30/98  05:59p   381,200   W3svc.dll
   11/30/98  05:58p    92,944   Wam.dll


STATUS
======

Microsoft has confirmed this to be a problem in Internet Information Server
version 4.0. The fix is included in Windows NT 4.0 SP5.


Additional query words: IIS hotfix hot fix qfe quick engineering patch

======================================================================
Keywords          : kbDSupport kbiis400bug kbOSWinNT400sp5fix 
Technology        : kbiisSearch kbiis400
Version           : winnt:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
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,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 2002.