Can I still upgrade to windows 11 for free from Windows 10?

Yes. It is totally free to upgrade Windows 10 to Windows 11 as the Windows 10 product key can be used to activate Windows 11.

It is now a straightforward process, as Microsoft still honors Windows 10 licenses for Windows 11 installations. If your PC meets the official requirements, you can use the Windows 11 Installation Assistant or perform a clean install, and your Windows 10 digital license will automatically activate Windows 11. No new product key is needed. Just sign in with the same Microsoft account linked to your Windows 10 license, and activation should happen seamlessly.

If your PC doesn't meet the official requirements, you can still upgrade to Windows 11 for free by changing the registry. After installation, Windows 11 should reactivate using your existing Windows 10 license, as long as you’re installing the same edition (e.g., Home or Pro).

For the smoothest experience, ensure you back up your data before upgrading. If you’re doing a clean install, you can skip entering a product key during setup. Windows 11 will activate automatically once connected to the internet if your hardware was previously registered with a valid Windows 10 license.