https://www.theregister.co.uk/2018/11/08/windows_10_activation/

Microsoft's activation servers appear to be on the blink this morning – some Windows 10 users woke up to find their Pro systems have, er, gone Home.

Twitter user Matt Wadley was one of the first out of the gate, complaining that following an update to the freshly released Insider build of next year's Windows, his machine now thought it had a Windows 10 Home licence.