ISA Server Pass-Through Authentication Does Not Work with NTLM (289858)
The information in this article applies to:
- Microsoft Internet Explorer 5.5 for Windows NT 4.0
- Microsoft Internet Explorer 5.01 for Windows NT 4.0 SP 1
- Microsoft Internet Explorer 5.0 for Windows NT 4.0
- Microsoft Internet Explorer 4.01 for Windows NT 4.0 SP 1
- Microsoft Internet Explorer 4.01 for Windows NT 4.0 SP 2
- Microsoft Internet Explorer 4.0 for Windows NT 4.0
- Microsoft Internet Explorer 3.02 for Windows NT 4.0
- Microsoft Internet Explorer 5.5 for Windows 98 Second Edition
- Microsoft Internet Explorer 5.01 for Windows 98 Second Edition SP 1
- Microsoft Internet Explorer 5.5 for Windows 98
- Microsoft Internet Explorer 5.01 for Windows 98 SP 1
- Microsoft Internet Explorer 5.0 for Windows 98
- Microsoft Internet Explorer 5.5 for Windows 95
- Microsoft Internet Explorer 5.01 for Windows 95 SP 1
- Microsoft Internet Explorer 5.0 for Windows 95
- Microsoft Internet Explorer 4.01 for Windows 95 SP 1
- Microsoft Internet Explorer 4.01 for Windows 95 SP 2
- Microsoft Internet Explorer 4.0 for Windows 95
- Microsoft Internet Explorer 5.5 for Windows 2000
- Microsoft Internet Explorer 5.01 for Windows 2000 SP 1
- Microsoft Internet Security and Acceleration Server 2000
This article was previously published under Q289858 SYMPTOMS
If you are using Internet Security and Acceleration (ISA) Server 2000 pass-through authentication with NTLM authentication as described in the "Pass-Through Authentication" section of the ISA Server documentation, you may receive the following error message in Internet Explorer:
HTTP 401.2 unauthorized - Logon failed due to Authentication Failure Internet Information Services
RESOLUTIONThis problem was corrected in Internet Explorer 5.5 SP1.
To obtain the latest version of Internet Explorer, visit the following Microsoft Web site:
STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
| Modification Type: | Major | Last Reviewed: | 11/26/2003 |
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| Keywords: | kbenv kberrmsg kbprb KB289858 |
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