I just upgraded from RT 4.4 RC2 to 4.4 RC3 in my test environment. I had
an issue in RC2 that I still have in RC3.
I go to the login page and enter my credentials – I immediately get sent
to https://10.2.1.45/rt/NoAuth/Login.html – and the page says “An
internal RT error has occurred. Your administrator can find more details in
RT’s log files.” However, I can refresh the page and I will be logged
into RT just fine.
The rt.log file shows quite a bit of stuff (mostly debug and info stuff).
But near the bottom it shows:
 [Mon Jan 11 20:31:59 2016] [error]: RT::User::ExternalAuthId
Unimplemented in RT::Record. (/opt/rt4/sbin/…/lib/RT/Record.pm line 958)
Max McGrath https://www.linkedin.com/pub/max-mcgrath/1b/3a6/a21