How to deactivate Windows Product Key and use it on another computer?

Switching the Windows Product key from one computer to another is one of the most useful solutions for Windows users. And this is also the reason that Windows users often deactivate Windows Product key on the old computer to use on the new Windows computer.
1. Deactive Windows Product Key
To deactivate the Windows Product key, follow these steps:
Step 1:
First open the Command Prompt under Admin. To do this, click the Start button, and then type cmd into the Search box. On the list of search results, right-click cmd.exe and select Run as admininstrator.
Step 2:
In the Command Prompt window, enter the following command and press Enter: slmgr / dlv
Step 3:
The Windows Script Host dialog box that contains the software license information appears on the screen.
Step 4:
Your task is to find and note the Activation ID displayed on the Windows Script Host dialog box, then click OK.
Step 5:
To uninstall the Windows Product key, enter the following command and then press Enter: slmrg / upk (Activation ID)
Step 6:
A popup window with a message saying that you have successfully uninstalled the product key: "Uninstalled product key successfully" appears on the screen.
2. Active Windows Product key
Having a Windows product key on your new Windows PC is pretty straightforward. You can use the Windows 10 Product Key that you uninstalled or deactivate on your old computer to install or activate the Windows Product key on your new computer.
Step 1:
First open the Command Prompt under Admin. To do this, click the Start button, and then type cmd into the Search box. On the list of search results, right-click cmd.exe and select Run as admininstrator.
Step 2:
In the Command Prompt window, enter the following command and press Enter: slmrg / ipk (Windows product key)
Step 3:
A popup window with a message saying that you have successfully installed the product key is displayed: "Installed product key (your Windows product key) successfully."