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HTTP 401.3 - Access denied by ACL on resource

Posted on 2004-04-14
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Last Modified: 2011-08-18
Hi, when going here:

http://www.mbs.ac.uk/corporate/bis/members

We get this error:

You are not authorized to view this page
HTTP 401.3 - Access denied by ACL on resource

We get this error on all our client machines that route through our Microsoft Proxy Server 2.0

If we connect a machine directly to the Internet via dialup, we get prompted with a normal NT style (NTLM?) login box, which then works fine.

We cannot however, seem to get prompted to logon when routing through MSP2.0, just an instant 401.3 error.

Quite urgent, maximum points.

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Question by:JamesMonaghan
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Accepted Solution

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Asta Cu earned 500 total points
ID: 10823743
Authentication May Fail with "401.3" Error If Web Site's "Host Header" Differs from Server's NetBIOS Name
http://support.microsoft.com/default.aspx?kbid=294382

Many more, but this will get you started.
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by:Asta Cu
ID: 10823763
CAUSE - This issue occurs if the Authenticated Users group does not have access permissions to the Exchsrvr\exchweb folder.
RESOLUTION - Here at source link:  http://support.microsoft.com/default.aspx?scid=kb;en-us;317471

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Expert Comment

by:Asta Cu
ID: 10823787
SYMPTOMS
When you view a SQL Server 2000 Service Pack 2 database in your browser using HTTP on Windows Server 2003, you may receive the following error message:

Error 401.3 Access Denied

You are not authorized to view this page.
CAUSE
This behavior occurs because the SQLXML ISAPI extension DLL is not enabled in Internet Information Services (IIS) Server on Windows Server 2003. You must enable this DLL to use HTTP to view a SQL Server 2000 SP2 database in your browser in Windows Server 2003.
RESOLUTION
To resolve this problem, enable the SQLXML ISAPI extension DLL in IIS Server on Windows Server 2003, and set the WWW service to IIS 5.0 isolation mode instead of IIS 6.0 mode. To do this, follow these steps:
http://support.microsoft.com/default.aspx?scid=kb;en-us;816674

With many more possibilities here:
http://support.microsoft.com/search/default.aspx?InCC_hdn=true&Catalog=LCID%3D1033%26CDID%3DEN-US-KB%26PRODLISTSRC%3DON&withinResults=&QuerySource=gASr_Query&Product=msall&Queryc=error+401.3&Query=error+401.3&KeywordType=ALL&maxResults=25&Titles=false&numDays=&InCC=on

Back to work, hope this helps you.
Asta
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Author Comment

by:JamesMonaghan
ID: 10831136
Thanks for your help !
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LVL 27

Expert Comment

by:Asta Cu
ID: 10833335
Thank you for the update.  I'm so pleased that I could be of some assistance to you on this urgent issue.  Hopefully the next time we meet, I can provide you with what you deem to be "A" level support.
Best wishes,
":0) Asta
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