Here's how to uninstall the Product key on a Windows computer

Removing the Product Key installation on a Windows computer allows you to replace the other license key to re-enable the use of your Windows computer. In particular, it is extremely useful in case you were previously using a trial license key, illegal pirated or key license key

To remove the Product key installation on Windows computers, please refer to the following article of Network Administrator.

Steps to uninstall the current Product key:

Step 1:

Open Command Prompt under Admin on your system by pressing Windows + X key combination to open the Power User Menu, here you click Command Prompt (Admin).

Alternatively, enter cmd in the Search box on the Start Menu, then on the search results list, right-click on Command Prompt and select Run as administrator.

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Step 2:

To find the current Product key, enter the following command into the Command Prompt window and press Enter:

slmgr.vbs / dlv

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Step 3:

This time on the screen appears the Script Host window containing all copyright information. Here you will find the Product key located next to the Activation ID option. Remember to note this Product Key again.

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Step 4:

To uninstall the Product key, enter the following command into the Command Prompt window and press Enter:

slmgr / upk 'Product Key'

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Upk stands for uninstall product key (uninstall product key). Replace the Product Key section with the Product Key you noted in the previous step.

After successfully removing the Product key, you will receive a successful notification.

Step 6:

To install on the upgrade system, use the following command:

slmgr / ipk 'Product Key'

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ipk stands for install product key (installing product key). Replace the product key with the product key that you noted in the previous step.

Refer to some of the following articles:

1. Some tips to free up Windows 10 computer hard drive space

1. How to activate the hidden Admin account on Windows 7/8/10

1. Use CMD to create an 'undeleted' folder on Windows

Good luck!