If none of the above fits your scenario, buying a genuine license is the safest route. Here are the most affordable ways:
In summary, while it's possible to install Windows 11 without a product key, it's not recommended. Purchasing a genuine product key or upgrading from Windows 10 are the best ways to ensure you have a fully activated and supported version of Windows 11. microsoft product key free windows 11
: If you've previously upgraded to Windows 10 for free (before the free upgrade offer ended) and your device meets the Windows 11 requirements, you might have a digital license. This ties your Windows 10 installation to your hardware. If none of the above fits your scenario,
If you have an old laptop or desktop that you are no longer using, you may be able to reuse its key: : If you've previously upgraded to Windows 10
