401 - Unauthorized: Access is denied due to invalid credentials on IIS7 (Windows Server 2008)
i encountered problem in iis7 after disabled "anonymous authentication" , enabled "integrated window authentication".
hopefully helps encountered same issue.
kb article link: http://support.microsoft.com/kb/215383
check ntauthenticationproviders iis metabase property, if set default "negotiate,ntlm" .
c:\inetpub\adminscripts>cscript adsutil.vbs w3svc/ntauthenticationproviders
set ntauthenticationproviders iis metabase property "ntlm".
c:\inetpub\adminscripts>cscript adsutil.vbs set w3svc/ntauthenticationproviders "ntlm"
Windows Server > Security
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