Officially, no. Unofficially, Microsoft allowed some free upgrades from Win7 to Win10/11 years ago, but that loophole is now closed for new installations.
If you only need a key to finish an installation for testing, manufacturers sometimes provide "generic" keys. These allow installation but do provide a permanent license: Look up product keys - Autodesk all serial keys
Some keys are tied to a specific machine’s hardware ID (like the BIOS or motherboard), making them difficult to transfer to a new computer. The Evolution of Licensing Officially, no
Think of it like a : holding the key provides the means to unlock the door, but the license agreement itself is what legally grants you permission to live in the house. How Serial Keys Work These allow installation but do provide a permanent
: If you are using a specialized hardware device, you may need a Serial-to-USB adapter
As the internet allowed for easy sharing of binary data, the (or Product Key ) emerged as a way to verify ownership during installation without physical media.