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Q262486: 100% CPU Utilization or AV When You Use Basic Authentication

Article: Q262486
Product(s): Internet Information Server
Version(s): 4.0
Operating System(s): 
Keyword(s): kbDSupport
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
========

When you use Basic authentication in Internet Information Server (IIS), the CPU
utilization may reach 100%, or you may receive access violations (AVs).

WORKAROUND
==========

To work around this problem, do not use Basic authentication.

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. This fix may receive additional
testing at a later time, to further ensure product quality. Therefore, if you
are not severely affected by this problem, Microsoft recommends that you wait
for the next Windows NT service pack that contains this fix.

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 about 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
 ----------------------------------------------------------------
 6/01/2000 2:48:00PM  4.2.746.1    330,080 Asp.dll       x86
 6/01/2000 2:46:16PM  4.2.746.1    185,792 Infocomm.dll  x86
 6/01/2000 2:47:10PM  4.2.746.1    38,256  Ssinc.dll     x86
 6/01/2000 2:47:18PM  4.2.746.1    25,360  Sspifilt.dll  x86
 6/01/2000 2:46:58PM  4.2.746.1    228,496 W3svc.dll     x86



STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products that are
listed at the beginning of this article.

Additional query words: TsFlushCacheUser

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

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