How to deactivate Windows 7 8 10 and change the product key

Activation is a protection mechanism implemented in Windows 10 and earlier versions against piracy. It first appeared in Windows XP and exists with different changes and improvements in Windows Vista, Windows 7, Windows 8 and Windows 10. When activation is successful, usually it indicates that your copy of Windows is genuine. There may be times when you need to deactivate your copy of Windows 10 in order to transfer your license to another PC. Here is how you can deactivate your copy of Windows 10.

class=”entry-title”>Windows 10 banner logo nodevs 03Activation verifies that your copy of Windows is not used on more devices than the license allows. If you are about to sell or give away your PC but want to keep Windows 10 installed there, it is a good idea to deactivate it. Deactivation is also useful if you want to use your product key on some other PC and stop using it on the current PC


this article, we will see how to deactivate Windows 10 by uninstalling the product key. Additionally, we will see how to install another product key instead.

To deactivate Windows 10 by uninstalling the product key, you need to do the following:
  1. Open an elevated command prompt.  You can also use keyboard shortcuts for this route: Windows key +


    followed  A (admin).
  2. Type or paste the following command:
    slmgr /upk
    Windows 10 slmgr upk
  3. Wait


    the command finishes its work.


    the end, you will see the following message:Windows 10 slmgr upk done
Windows 10 will become deactivated. You can visit the Settings app and check out the “Activation” page and check the activation state. It will look like this:Windows 10 is not activatedWindows 10 is not activated sysinfo
After you deactivate Windows 10, you might be interested in clearing the product key from the Registry so it cannot be viewed with special apps and scripts.
Please keep in mind that if you reach the online activation limit, e.g. by activating many PCs with the same key, you may have to activate your copy of Windows by phone since the online activation will fail.
To install a new product key, you need to type the following command in the elevated command prompt:
slmgr -ipk your-new-product-key