IIS7, Win2008 R2, Authentication, SharePoint 2010 (claims-based authentication)
: "Challenge-based and login redirect-based authentication cannot be used simultaneously"
We are only seeing the above error message displayed in IIS7 Manager, "site", Authentication. We do not see this error in the applications themselves.
We're only seeing this in IIS manager. The site is SharePoint 2010 with some non-sharepoint sites running in the same web site. Everything is working fine and there are no errors in the Event logs (Application, System,
Should we be concerned at all? Most of what we're seeing on the web says this can be safely ignored.
There was one "workaround" presented (http://mvolo.com/iis-70-twolevel-authentication-with-forms-authentication-and-windows-authentication