I stumbled upon a customer, that complained about some pages in their intranet throwing weird errors with authentication. Those pages seemed to have one thing in common – there was a Yammer embed (or a SharePoint script webpart with Yammer embed script in it, to be precise) there. The error code they got was “AADSTS90013: Invalid input received from the user”. Below, you can see an example of the error screen. Okay – this is going to be extremely specific, and probably won’t solve the […]