: The most direct method is entering a 25-character key in Settings > Update & Security > Activation > Change product key .
If you are looking to activate a legitimate version of Windows 10 LTSC (Long-Term Servicing Channel) in a business or personal environment, you must use authorized methods. ⚠️ The Danger of "Activador" Downloads
If you are literally trying to activate Windows XP on a modern PC, stop. Windows XP has not received a security update since 2019 (POSReady patches). Connecting Windows XP to the internet today is a massive security risk.
