DOCUMENT:Q324333  18-JUL-2002  [iis]
TITLE   :Error if User Not Included in Bypass Traversal Checking Policy
PRODUCT :Internet Information Server
PROD/VER::4.0,5.0
OPER/SYS:
KEYWORDS:

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

 - Microsoft Internet Information Server version 4.0 
 - Microsoft Internet Information Services version 5.0 
 - Microsoft Internet Information Services version 5.1 
-------------------------------------------------------------------------------

SYMPTOMS
========

When you connect to any page on an Internet Information Services (IIS) Web site,
you may receive the following error message:

   401.3 Unauthorized due to ACL on resource

CAUSE
=====

This can occur if the account that is trying to access resources on the server
does not have enough NTFS file system permissions on the resource.

RESOLUTION
==========

Do not remove the Everyone group from the Bypass Traverse Checking policy. If
the Everyone group must be removed from the policy for security reasons, make
sure that the IUSR account is listed in the policy.

STATUS
======

This behavior is by design.

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

Steps to Reproduce the Behavior
-------------------------------

1. Tighten the NTFS permissions on the resource.

For additional information, click the article number below to view the article in
the Microsoft Knowledge Base:

   Q271071 Minimum NTFS Permissions Required for IIS 5.0 to Work

2. Remove Everyone from the local Bypass Traverse Checking security policy.

3. Try to access a simple HTML page on IIS. You receive the 401.3 error message.


Additional query words: 401.3 access denied

======================================================================
Keywords          :  
Technology        : kbiisSearch kbiis500 kbiis400 kbiis510
Version           : :4.0,5.0
Issue type        : kbprb

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

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.