Pirated Windows 7 to Legal Windows 10

Hi Everyone,

I just bought Windows 10 Home from Microsoft Site. I have a pirated version of Windows 7 installed and want to upgrade to genuine Windows 10 Home. Using the MS Upgrade tool, it says it cannot validate Windows 7 product key and doesn't allow me to upgrade. What do i do? 

You can install Windows 10 using the media creation tool and a USB flash drive. This will delete all of your personal files and applications, so make sure to backup your PC before continuing. Download then run the media creation tool from this page: https://www.microsoft.com/en-us/software-downlo...
Click "Download tool now" then run the application.
You will need a blank USB flash drive with at least 8 GB of storage space. The media creation tool will allow you to boot a Windows installer from the USB flash drive you selected.

During the Windows installation, you may be asked for a Windows product key. Enter the product key that you have for Windows 10 Home, then continue. Windows should automatically activate after the installation when you connect to the internet.

Let me know if you have any questions or if that does not help, there are more steps you can try.

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Hello,

The best way would be to upgrade a fresh image of Windows 10.

Once upgraded, it will need to be activated with a purchase from the Microsoft store.

Below is a link to Windows 10 download

https://www.microsoft.com/en-us/software-downlo...

Follow the instructions on the page, and it will help you get Windows 10.

If you need further assistance, please let me know.


-Brien
Brien Travis
MCSA Windows 10
MCP

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Hi Vishal, your best option is to backup your data and clean install Windows 10 in order to remove the pirated version of Windows 7

Backup your date

Then, Boot your PC from the Installation Media you just created (change Boot Order in your BIOS) to begin installing Windows 10

During the installation process skip the steps which ask for a product key and select the option 'I am Reinstalling Windows 10 on this PC'

Make sure you install the correct Edition of Windows 10 (Home, Pro . . . etc.) for your new Product Key

Then Once Windows 10 has installed, go to Settings - Update and Security - Activation and enter your new Product Key
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Last updated April 21, 2025 Views 19,079 Applies to: