Instructions on how to remove the Windows Product Key and transfer it to a new PC.

Before upgrading to a new computer, you should remove the Windows Product Key from your old computer. This helps avoid activation errors on the new system and ensures that a future buyer cannot use your license if you sell the old computer. This guide will show you how to remove the Windows Product Key and transfer it to your new computer.

 

Remove the Windows Product Key from your old computer.

If you plan to sell or give away your computer, it's crucial that you manually remove the Windows activation key from the machine. Even if the computer has been fully restored, the new owner could still extract the product key to activate not only the current computer but also use your key on other computers (which could restrict you).

Even if you don't want to give the computer away, it's best to remove the product key to avoid any future restrictions on the product key due to multiple activated devices. However, you can skip this step if you plan to reuse the old computer for a different purpose; Microsoft usually allows activation on two computers even if the official terms state only one device.

Unfortunately, Windows doesn't have a graphical interface method to remove the product key, as Microsoft wants the license to be stored on the hardware. Instead, you'll have to use commands in Command Prompt to remove it properly:

Note : If you skipped the Microsoft account request and your key is not yet registered with a Microsoft account, you should first find and save your product key before following these instructions. You will need it to activate your new computer offline.

 

Open Command Prompt and run the following commands:

slmgr /upk slmgr /cpky

The first command will uninstall the product key from Windows, and the second will remove it from the Registry, preventing anyone from extracting it later. You should immediately restore your computer to its factory settings and avoid logging in with your Microsoft account.

Transfer your Windows Product Key to a new computer.

Transferring your product key to a new computer is actually very easy, thanks to the digital license. The retail product key is linked to your Microsoft account, so all you have to do is sign in with the same Microsoft account while setting up the new computer, and it will be activated automatically.

If it's not automatically activated, open Windows Settings and go to System → Activation . Click on Troubleshoot and select I changed hardware on this device recently . Then you can select your old device and click Activate to transfer the product key.

After activation, it's important to remove the old computer from your Microsoft account. Otherwise, Microsoft will automatically activate the old computer when it connects to the network, as its hardware ID has already been registered on Microsoft's servers. Open the Devices section in your Microsoft account and click Remove device under the old device.

If you're using a new computer without a Microsoft account, you'll need to manually enter the product key you previously recorded to activate it. Simply go to System → Activation and click the Change button next to the Change product key option . Enter the 25-digit product key and click Next to verify and activate.

To avoid license recognition issues, ensure your old computer remains linked to your Microsoft account until the new computer is fully activated. Once the computer is up and running, apply system configurations and install any necessary optimization applications.

Good luck!

Please refer to the following articles for more information:

1. Instructions on how to change the Product Key on Windows 10
2. No software installation required, here's how to find your Windows Product Key.
3. This is how to uninstall a Product Key on a Windows computer.