After upgrading the AWI, it may be that the signon screen no longer has the "Login Type" field available. This is needed to switch between Automation Engine, SAML, and/or Kerberos Login types.
Release : 12.3
Component : Automic Web Interface
Caused by not having the correct setting in the configuration.properties file
In order to get this to show up, put the following setting into the configuration.properties file in the AWI's config folder:
This should allow the other Login Types to show up at the AWI login page.
Additional information on SSO Setup can be found in the documentation: https://docs.automic.com/documentation/webhelp/english/AA/12.3/DOCU/12.3/Automic%20Automation%20Guides/help.htm#Installation_Common/install_SSO_setup.htm