To download Windows 10 Home and use an existing product key for activation:
- Go to the official Windows 10 download page: Download Windows 10.
- Download the Media Creation Tool from that page.
- Run the tool and choose either:
- Upgrade this PC now, or
- Create installation media (USB flash drive or ISO file) to install on another PC.
- Boot from the USB/DVD if doing a clean install and select Windows 10 Home when prompted.
- When asked for a product key during setup, enter the existing Windows 10 Home product key, or choose I don’t have a product key and enter it later in Settings.
- After installation, connect to the internet and go to Start > Settings > Update & Security > Activation to confirm activation. If not yet activated, select Change product key and enter the Windows 10 Home key.
If Windows 10 Home was previously activated on this device with a digital license linked to a Microsoft account, activation may happen automatically once signed in and online.
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