Activating Windows 10 license key, this tutorial is intended for lab machines. It is recommended to always buy licenses from vendor.


1. Go to file explorer -> Right Click “This PC”-> Properties

2. At the bottom, we can verify whether Windows has been activated or not “Windows is not activated”

3. Open cmd as administrator, Win key -> cmd -> Right Click “Run as administrator”

Click yes to permit the operation

4. In this case I will be using “VK7JG-NPHTM-C97JM-9MPGT-3V66T” which is for Windows 10 Pro, you can search on the internet for some key codes.

Enter the following command to submit the key

  • slmgr /ipk VK7JG-NPHTM-C97JM-9MPGT-3V66T

Wait a few minutes until this pops up.

5. Now you need to connect to KMS server

  • slmgr /skms

This message indicates the connection is successful

6. Now submit the request

  • slmgr /ato

This activation fails due to the key has been reported, we need to find a clean key from the internet.

Now repeating the process with a valid key will activate the product.

  • slmgr /ipk W269N-WFGWX-YVC9B-4J6C9-T83GX
  • slmgr /skms
  • slmgr /ato

Now click Ok and reboot.

Repeat Step 1 & 2 to check the activation of Windows. Now it shows “Windows is activated”