I was referred here by someone from the Windows Directory Services forum. Please advise if I'm posting in the wrong place.
AD FS 3.0 (part of Windows Server 2012 R2) is installed in preparation for deploying an Office 365 hybrid configuration.
The default install of AD FS fails when users authenticate via the pop-up dialog when connecting from the intranet using Windows Authentication. The /adfs/ls/idpInitiatedSignon.aspx URL pops up an authentication dialog, completion of which results in a 400 Bad Request error. This occurs even when connecting using IE on the server itself. After changing AD FS to use forms authentication for intranet connections, the forms logon screen appears and upon filling in the ID and password, the logon is succesful.
Where do I start diagnosing this? I have been through the few articles on the Internet about the 400 Bad Request errors but none seem relevant.
Thanks in advance.
Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."