Windows 10 activation by phone

Windows 10 wants to live connected to the internet, it's clear. But there are some situations where it is not possible or it is mandatory forbidden.
In these cases you have to use the procedure to activate the Windows copy by phone. But how?
The activation menu, in fact, doesn't show clearly this possibility, but a workaround exists.

• Log in using an administrative account
• Type "SLUI 04" in the search box of the menu
• Select and run the application you find

A renewed "Activation by phone" mask should appear and by following the wizard you should able to activate your authentic copy of the OS follow the step by step procedure by phone.

Credits: http://windows.microsoft.com/it-it/windows-10/activation-errors-windows-10

How to retrieve Win product key from uefi using the command prompt

From many years, pc manufacturers don't use the label of Windows Product key anymore. This because UEFI bios has the possibility to store and protect that key. This is a really limitation for an user who wants to restore the pc without having the recovery cd created soon after the first setup. To partially overcome this problem, Microsoft gives you the possibility to retrieve the product key using the command prompt. Here, the way to get it: 1) run the command prompt with administrative privileges 2) type the command:

wmic path SoftwareLicensingService get OA3xOriginalProductKey