I have actually blogged about how to implement this, though I am using Sitecore 9.3 in my scenario (I believe this should work in 9.2 as well)
You need to do the following:
Create a Sitecore Host Plugin for ADFS using OpenID. The key to this plugin is to specify these options below. I have added a screenshot of my implementation (link to Github on my blog ...
It seems that the following line in my OidcIdentityProvider is what was causing my problems:
SignInAsAuthenticationType = GetAuthenticationType(),
When I removed this the full authentication flow started working!
I don't know what this setting is supposed to do, but it doesn't seem to do any harm to not have it there (at least for now).
The below is based on my experience of integrating Azure ADb2C with Sitecore on CD
Steps for integrating CD with Azure ADB2C
The steps for Integration are available on a lot of answers here on SSE. Many answers like this are complete and provide all the code for the integration
Need to create virtual users?
Yes , if you want to maintain sessions and show/...
after talk with Sitecore supports, it appears that all configuration looks good. The one thing that differ from their and my implementations approach of OpenId noticiations. After using Support's approach the OpenId starts working.
Notifications = new OpenIdConnectAuthenticationNotifications
AuthenticationFailed = notification =>