Activate Windows 10 Enterprise Edition
If you have installed Windows 10/8 Enterprise Edition, you will now want to activate it. There are two ways to do it. One via the Internet and others by using the Phone. To do so, open an elevated Command prompt as follows:
Activate Windows over the Internet
Next, type in SLUI.EXE 3 and hit Enter.
This will open the Windows Activation dialog box. You can enter the serial number here.
Type in the serial number and click on Activate. You will be required to be connected to the Internet.
Activate Windows by Phone
If you wish to activate Windows by phone, type SLUI.EXE 4 instead. This will open up a box that will let you activate your Windows via the telephone.
Select your country from the drop-down menu and click on Next.
Here you will get to see some toll-free phone numbers which you can call. You will be required to give the mentioned numbers to the other person, who will, in turn, give you a Confirmation ID, which you will need to enter. Once done, click on Activate. Once activated, you may wish to view the Licensing Status and Activation ID of your Windows OS with slmgr.vbs. As mentioned, you can follow this procedure for the activation of any version or edition of Windows. Go here if you want to learn how to change your product license key in Windows. These posts may interest you: