Customers have noticed Microsoft's phone lines aren't supporting Windows phone activation anymore Support documentation still indicates it's possible despite ongoing struggles Looks like you now need ...
Phone activation for Windows has been discontinued. You'll have to use an online portal to activate Windows. The portal requires a Microsoft or business account. Microsoft has typically offered a few ...
According to Neowin, Microsoft has killed the final method for activating Windows without an internet connection—that is, activation by telephone. It appears to have been discontinued a few days ago.