To activate , you typically redeem a code through the official Microsoft Redeem page or have the license automatically recognized by compatible hardware. How to Redeem a License Code
If you have a physical 25-character activation code, follow these steps to link it to your account: : Go to the official Microsoft Redeem Page . dts sound unbound license code link
If you previously purchased a license or have compatible hardware but the app shows as "unlicensed": Refresh License To activate , you typically redeem a code