Windows 10 users left baffled and mad over Microsoft's activation glitch
This device is unable to play the requested video. Microsoft is reportedly working on a fix for a bug in its activation server that has caused Windows 10 Pro machines to report that their license has not been activated.
Windows 10 Pro Licenses Are Being Downgraded To Windows 10 Home
Win10 activation server down; your Pro license is still good, despite the warnings
Windows 10 activation server issue causes PCs to lose activated status