Microsoft KB Archive/142702

= IIS Err Msg: Authentication Is Required For This Document =

Article ID: 142702

Article Last Modified on 6/23/2005

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APPLIES TO


 * Microsoft Internet Information Server 1.0

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This article was previously published under Q142702



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx



SYMPTOMS
The following error message appears on a Microsoft Internet Explorer client:

Error: Authentication is required for this document. The server did not specify a supported authentication method."



CAUSE
A potential cause can be that you have set the Password Authentication on the Microsoft Internet Information Server to a level that is not supported on your Explorer client. The Windows NT Internet Explorer 1.5 Client will only support Anonymous and Basic Authentication.



RESOLUTION
Currently, only Internet Explorer 2.0 for Windows 95 supports Challenge/Response Authentication. Run INSTALL.BAT from the Internet Information Server's \CLIENTS\WIN95 directory to install Internet Explorer and the authentication module.

If Internet Explorer is not installed in the above manner, manually add the authentication module by running IENTLM.EXE from the \CLIENTS\WIN95 directory.

Additional query words: prodiis1

Keywords: kbinterop KB142702

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