Can I use windows 10 DLC game keys on windows 11?

Windows is Windows

As long as the number is equal to or larger than the requirements, you should be good to go on anything from the last decade or so.

I'm not sure what you mean. There are no Windows 10 only games or DLC, likewise with Windows 11.

Well, you definitely have a non-legal copy then if you downloaded it from there.

As to "where can I download the original version of Windows 11 or windows 10 without a key": You can download Windows but, without a key, it won't be a legal copy. It sounds to me as if you want Windows but don't want to pay for it which is something we aren't allowed to discuss on here

I bought a laptop with the system (windows 10) but I don't know what the key is. I do not want to use an illegal copy, so is it possible to check the activation key somehow?

Hi, I hope you're doing great out there. I am an Independent advisor and I am here to help you in regard to your concern.

As per Microsoft Support:

"To activate Windows, you need a digital license or a product key. If you're ready to activate, select Open Activation in Settings. Click Change product key to enter a Windows product key. If Windows was previously activated on your device, your copy of Windows 10 or Windows 11 should be activated automatically."

This means that you need to have or buy a key for Windows 10 that you need to redeem.

For your reference, you can check this link: https://support.microsoft.com/en-us/windows/act...

Well, you definitely have a non-legal copy then if you downloaded it from there.

As to "where can I download the original version of Windows 11 or windows 10 without a key": You can download Windows but, without a key, it won't be a legal copy. It sounds to me as if you want Windows but don't want to pay for it which is something we aren't allowed to discuss on here