I entered it in the change product key section of the Activation settings and it triggered the upgrade from Windows 10 Home to a fully activated Windows 10 Pro. So, it seems like Windows 8.1 product keys work exactly the same way in Windows 10 that they did for Windows 8.1. Thinking about this, it is quite fair. What you need to do is. From windows 7, use the upgrade tool and install win 10. This will convert your key to a windows 10 key. Next, sign into a Microsoft account. This will tie your win 10 key to that account. Now, do a clean install of windows 10, skip all of the "Enter product key" screens during the install. Enter your Windows 8.1 product key, select Next, and follow the instructions. To activate Windows 8.1 by phone: Select the Start button , enter PC settings , and then select PC settings from the list of results. Step 4. Navigate back to Settings. Click on "Update and Security", then tap on "Activation" and "Change Product Key" option. Step 5. Enter your product key. Windows will verify the product key over the internet and activate your Windows 10. As you already know that you first need to have a genuine Windows 7/8.1 installed in the Computer so that you can make use of the free Windows 10 upgrade, you may need to contact the Microsoft Activation Center regarding your Product key issue. Try the appropriate phone number listed here: Microsoft Activation Centers Worldwide Telephone Numbers: I apologize, unfortunately, the Microsoft free upgrade to Windows 10/11 is only applicable if you have genuine Windows 7/8. It is not possible to use a Windows Vista license key to activate Windows 10/11. Best regards, Van. Van S. ShowKeyPlus is a freeware tool that tells you what your Windows product key is. Run the program, and it lists the name of the operating system, the product ID, the build version, and the key. It also indicates whether your license is an OEM Key. Since my laptop came with Windows pre-installed and activated, it has an OEM key from Acer. 1. Windows 10 digital license is associated with your PC hardware. It means, when you activate Windows 10, the activation online server will record your hardware ID and keep it in the cloud. So if you make significant changes, such as replacing your motherboard, Windows will no longer find a license that matches your PC. – JoyQiao. .

does windows 8 product key work for 10