Problem
I had troubles troubleshooting access to the Indicium log-interface. It kept telling me “Signing is currently not possible”, meaning that it was not possible to sign in at the moment.
Compounding problem was the total lack of errors in Indicium's log.
The cause of the issue was that ‘allow local login’ was disabled for OpenID connect:
Solution
Change it like this:
Remember to restart the Indicium application for this IAM in IIS after ticking the box. Now you can log in to Indicium.
Thanks