DOCUMENT:Q252941 04-AUG-2000 [iis] TITLE :No "NTLM" Authentication Method Available in IIS 5.0 PRODUCT :Internet Information Server PROD/VER:winnt:5.0 OPER/SYS: KEYWORDS:kbOSWin2000 kbDSupport kbiis500 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Services version 5.0 ------------------------------------------------------------------------------- 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, however, this authentication method is not listed. CAUSE ===== In IIS 5.0, 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 (http://www.microsoft.com/technet/iis/authmeth.asp) Additional query words: iis 5 challenge-response Challenge\Response nt lanman akz ====================================================================== Keywords : kbOSWin2000 kbDSupport kbiis500 Technology : kbiisSearch kbiis500 Version : winnt:5.0 Issue type : kbprb Solution Type : kbpending ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.