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Q246391: PaswordChangeFlags Set to 4 or Higher Causes Access Violation

Article: Q246391
Product(s): Internet Information Server
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbWinNT400PreSP7Fix
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft Internet Information Server version 4.0 
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SYMPTOMS
========

If you set the PasswordChangeFlags value to 4 or higher, and the number of days
that a user's password will expire is less than the PasswordExpirePrenotifyDays
value, an Access Violation error message occurs.

CAUSE
=====

If the PasswordChangeFlags value is set to 4 or higher, when IIS checks to see
if it needs to redirect the client to the password expire page, the function IIS
calls returns NULL instead of a pointer to a string containing the URL. IIS
incorrectly attempts to use the pointer to check the string to see if it is
empty without first checking to see if it has a valid pointer.

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       Version   Size    File name     Platform
  ----------------------------------------------------------------
  11/15/1999   07:06:25pm 4.2.731.1 329,024 Asp.dll       x86
  11/15/1999   07:04:36pm 4.2.731.1 184,736 Infocomm.dll  x86
  11/15/1999   07:05:23pm 4.2.731.1 11,248  Iwrps.dll     x86
  11/15/1999   07:05:33pm 4.2.731.1 38,256  Ssinc.dll     x86
  11/15/1999   07:05:42pm 4.2.731.1 25,360  Sspifilt.dll  x86
  11/15/1999   07:05:21pm 4.2.731.1 228,464 W3svc.dll     x86
  11/15/1999   07:05:03pm 4.2.731.1 87,508  Wam.dll       x86

  11/15/1999   07:05:45pm 4.2.731.1 549,648 Asp.dll       alpha
  11/15/1999   07:04:02pm 4.2.731.1 303,888 Infocomm.dll  alpha
  11/15/1999   07:04:47pm 4.2.731.1 16,656  Iwrps.dll     alpha
  11/15/1999   07:04:58pm 4.2.731.1 60,176  Ssinc.dll     alpha
  11/15/1999   07:05:05pm 4.2.731.1 39,696  Sspifilt.dll  alpha
  11/15/1999   07:04:45pm 4.2.731.1 383,760 W3vc.dll      alpha
  11/15/1999   07:04:29pm 4.2.731.1 149,264 Wam.dll       alpha



STATUS
======

Microsoft has confirmed this to be a problem in Internet Information Server 4.0.

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



Additional query words:

======================================================================
Keywords          : kbWinNT400PreSP7Fix 
Technology        : kbiisSearch kbiis400
Version           : winnt:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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