There you should see a list of activated products. Open Registry Editor and go to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\Licensing\LicensingNext. For volume licensed versions of Office, such as Office LTSC 2021, a Product ID is listed instead of a License ID.The License ID for consumer versions of Microsoft 365, such as Microsoft 365 Family, starts with CWW instead of EWW.
