I'm many years rusty on .NET, and I'm trying to use MSAL to authenticate my app. Currently I have the same code running from the Web app that signs in users tutorial (.NET Core version.) I'm finding that it only requires a valid user email from our company to pass through without apparently authenticating. It will balk if I try to enter a fictitious username/email. Otherwise it will pass through with them apparently registered via the account that I am logged into my workstation with. I do see this in the debug log when I attempt to log in with a bogus username:
OpenIdConnect was not authenticated. Failure message: Not authenticated
Am I possibly missing a property customized to our installation? Any hints or debugging suggestions appreciated in advance!