MSXML 3.0 Running on Windows NT 4.0 Server Fails Windows 2000 NTLM Authentication (300882)


The information in this article applies to:

  • Microsoft XML 3.0
This article was previously published under Q300882

SYMPTOMS

When you send a ServerXmlHttp request from Internet Information Server (IIS) 4.0 to Internet Information Services (IIS) 5.0, you may receive the following error message:
The login request was denied
This error occurs when all of the following conditions are met:
  • The computer that is running IIS 4.0 is also running Microsoft Windows NT 4.0 Server (or any service pack for Windows NT 4.0 Server).
  • The computer that is running IIS 4.0 is using Basic authentication.
  • The computer that is running IIS 5.0 is also running Microsoft Windows 2000 Server (or any service pack for Windows 2000 Server).
  • The security for the Web folder on the computer that is running IIS 5.0 is set to use Integrated Windows authentication.

CAUSE

XML and Windows NT 4.0 do not pass the NT LAN Manager (NTLM) security to Windows 2000, although the ServerXmlHttp script provides a userid and password, as follows: 
xh.Open "GET", "http://myserver/xmlweb/stuff.xml", False, _
   "myserver\administrator", "admin_pwd"

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft XML 3.0 that contains this hotfix.

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, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical 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
   -----------------------------------------------------------------
   31-May-2001  15:50  8.10.8531.0  1,103,872  Msxml3.dll   x86
   31-May-2001  15:48  8.10.8531.0     24,576  Msxml3a.dll  x86
   31-May-2001  15:48  8.10.8531.0     44,032  Msxml3r.dll  x86
   31-May-2001  15:49  6.0.2415.0      28,672  Xmlinst.exe  x86

WORKAROUND

To work around this problem, do not use Integrated Windows authentication on the computer that is running Windows 2000 Server and IIS 5.0. If you use Basic or Anonymous authentication, the computer that is running IIS 4.0 can retrieve the XML data, and Basic authentication still provides user security.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
Modification Type:MinorLast Reviewed:10/12/2005
Keywords:kbHotfixServer kbQFE kbprb kbQFE KB300882
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