Microsoft KB Archive/252941

= No "Windows NT Challenge/Response" Authentication Method Available in IIS 5.0 and Later =

Article ID: 252941

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft Internet Information Services 5.0
 * Microsoft Internet Information Services 6.0

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This article was previously published under Q252941



SYMPTOMS
In Internet Information Server (IIS) 4.0, Windows NT Challenge/Response (also known as NTLM) was listed as an authentication method on the Directory Security tab of a Web site. In IIS 5.0 and later, however, this authentication method is not listed.



CAUSE
In IIS 5.0 and later, NTLM is referred to instead as Integrated Windows authentication.



RESOLUTION
Use Integrated Windows authentication as you would have used NTLM in IIS 4.0.



MORE INFORMATION
For more information, refer to the following:   In the IIS 5 Documentation, refer to the following topic:  Administration Server Administration Security Authentication About Authentication  IIS 4.0 and 5.0 Authentication Methods Chart

Additional query words: iis 5 iis 6.0 iis6 challenge-response Challenge\Response nt lanman akz

Keywords: kbprb kbpending KB252941

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