IIS 7 and Above
Classic Pipeline: Mixing Forms and Windows Authentication
Last post Jan 23, 2011 02:37 AM by CarlosAg
Jan 19, 2011 07:14 PM|RussellMyers|LINK
"Challenge-based and login redirect-based authentication cannot be used simultaneously."
Jan 22, 2011 02:46 PM|steve schofield|LINK
have you seen this article
Windows Server MVP - IIS
Log archival solution
Install, Configure, Forget
Jan 22, 2011 03:08 PM|RussellMyers|LINK
Jan 22, 2011 05:28 PM|steve schofield|LINK
Is this the error you see in internet manager? I'd ignore the error and test your application. This might be some logic built into the inetmgr to not allow this behavior.
Jan 23, 2011 02:37 AM|CarlosAg|LINK
Indeed you should not worry of that warning if your apppool is running in Classic Mode, the reason we decided to leave it there was because it is still behavior that many user scenarios would be consider incorrect, since most of the time forms authentication
uses anonymous authentication and not windows.
However for users that do require this behavior it is correct to use Classic Mode for that and ignore the message.