| Misconception | Reality | |---------------|---------| | The RDS license key is stored in the registry. | Only the Key Pack ID and counts are stored—not the original product key. | | You can reuse a key from an old server without tracking. | RDS CALs are usually tied to a license server; rehosting requires a license move or reactivation. | | Any 20-character code is a product key. | The 20-character Key Pack ID is a product key—it’s an identifier for support/moves. |

Once you have your numbers or key, you must add them to your RDS environment:

If you see the CALs but no key, the licenses are "unbundled." You must go to -> Product: Windows Server (version) -> Get License Key Packs -> Generate a new key pack using your agreement number.