This weekend I wanted to create a new App in Azure so I could help a local nonprofit automate one of their donor relations processes via email through Office 365.
So I tried registering an app by visiting the App Registration Portal. I signed in to my personal Microsoft account, clicked 'New registration', then was greeted by this page:
I thought that was a bit strange, since I shouldn't have any restrictions... but then I noticed it listed
[redacted] School as the reason I couldn't do this.