I'd always drawn my own personal distinction as;
A beta will shit the bed and break itself.
An alpha will shit everyone's bed, break itself and everything around it.
So yeah, this is wandering into alpha-testing territory.
Sorry. All your data, programs and settings are gone. Please wipe your partitions and re-install. Every damned time we force an upgrade on you. SaaS... More like Crash course in creating boot drives and doing full installations as a Service.
Paris. Because even she's wondering what the hell is wrong with Microsoft these days.