Windows 10: Where can I buy a windows 10 product key?

I'm building a PC using old parts for my kid's, and I need a copy of windows 10 as the system isn't powerful enough for windows 11.I've read people recommend third party websites, but which ones are legitimate?

:)

 

windows 10 key

Thanks but I don't want to do any decrypting. I want to download a Win 10 ISO from Microsoft and install it using my Win 8 key. No other steps required. Is that possible?

 

How to buy a Product key?

I have Windows 10 home installed on my computer which it is not activated.

So I need to buy a product key to activate it. I have checked Microsoft website and Microsoft store but I can find the link to buy a product key. Can anyone help me to buy a product key for Windows 10 Home?

 

Windows 10 Product Key

Hi Oscar,

Since the laptop has no battery compartment wherein the product key is usually located, we recommend that you follow these steps to find your Windows product key:

• Press Windows + X and select Command Prompt (Admin).
• Enter this command: wmic path SoftwareLicensingService get OA3xOriginalProductKey
  and hit Enter.

Also, if you're looking to reinstall Windows 10 after a hardware replacement, we recommend that you follow the steps provided in this

article.

Let us know if performing these steps resolved the issue.