How to change product key in Windows 8.1
«How to change product key in Windows operating system?» This is one of the questions that is often asked by computer users.
Version 8.1 of the Windows operating system (like its predecessor) requires you to enter a license key, with which the RTOs will be fully legal (legitimate). And the need to change the product key can occur for several reasons. For example, you might face the need to use a different product key, or maybe you just need to activate the newly installed Windows 8/8.1 by replacing the generic key used to install Windows original product key.
There are three ways you can change the product key, and below we will show how each of them.
Using system properties
First, open «System». To do this, click the right mouse button on the icon «This computer» and then select «Properties» from the context menu. In Windows 8.1, the window can be open in other ways, for example, by clicking with the right mouse button on the «start» button, followed by selecting «System» in the menu, WinX.
In the bottom of the window «System», find the link «Change product key» and click on it.
Now, all you need to do is enter the 25 digit product key. The operating system will automatically connect to the Microsoft server to activate the license.
The method above is very simple and will work for most users, but if the first method you encounter any problems, try the following.
Open search bar keyboard shortcut Win + S, type «Slui.exe» (without the quotes) and press Enter.
As a result, you will see the same window asking to enter the 25-digit product key. And then just follow the simple activation procedure of Windows.
Via the command line
If none of the above methods does not work for you, this definitely will. To get started you need to open a command prompt window with administrator privileges.
Open the search bar and enter «cmd». Next, click the right mouse button on command prompt in the search results and select «Run as administrator». The same can be done even faster if you use the above mentioned WinX menu that opens when you right-click on the «start» button or by pressing shortcut keys Win + X.
In the command prompt window, type the following command and press Enter:
Replace your key. For example, if your product key ABCD-EFGH-IJKLM-NOPQ-RSTU-VVWXY, type slmgr.vbs /ipk ABCD-EFGH-IJKLM-NOPQ-RSTU-VVWXY and press Enter.