External Authentication MOSTLY NOT Working
Just upgraded files from 11 to 12, and now serving on version 18.104.22.1687.
External Authentication works sometimes, but most of the time we get a coffee cup and then a login prompt, and the server logs:
Client "Student Affairs User (client-name) [i.p.address.number]" single sign-on authentication failed on database "DB.fmp12" using "Account [fmapp]".
If I attempt a domain account manually, it usually logs:
Client "client-name" opening a connection from "computer-name (i.p.address.number)" using "ProAdvanced 12.0v3 [fmapp]".
Local FileMaker accounts work fine.
Recently, external authentication worked on the first attempt; later I attempted twelve 12 before the external authentication worked once; later 9 times before success; then 4; 10; etc.
We can RDC and login to the FM12 Server directly and consistently with the very same AD accounts we're using from the client.
Besides the FM upgrade, we are now using a Windows 2008 Server. Our AD Server is 2003, which I thought might be an issue, but, like I said, the OS authenticates just fine.