Product and version
FileMaker Server 11 Advanced – Version 126.96.36.1999
OS and version
Windows Server 2008 R2 Standard
If an account externally authenticated is not member of ADMINISTRATORS on the FileMaker Server Windows machine, but only member of POWER USERS, this Active Directory (AD) account cannot login successfully the Admin Console : "Invalid name or password" message displayed.
How to replicate
Specify and validate the desired AD Group within the Admin Console preferences; our logging tests were made locally on the machine server, and also from a remote client, with the exact same results.
Workaround (if any)
If the account is then included as a part of ADMINISTRATORS on the server machine, a following attempt is successful.