I'm having some authentication trouble with the Pin to Power BI feature in SSRS 2016. The problem is authentication. The report server itself is configured and connected to a Power BI tenant, but whenever the Sign in feature is accessed from the Report Portal, authentication occurs, and then the windows simply disappear. The client is not logged in, and not items can be pinned. It seems like something is blocking the token being saved. I've tried on multiple browsers, machines, etc....
A little more digging reveals a "bad request" authentication issue - "The client application requires at least one Graph permission"
Has anyone experienced this, or have a suggestion?
Thanks in advance