Office 2024 Key Generator. I think it has an option when activating ms office to add a little script that will reactivate it every 90 days or something. The versions of office provided by microsoft are retail versions, and to activate via kms, your office installations need to first hold a volume license.
Microsoft 365 or office for home. Volume licensed versions of office long term service channel (ltsc) 2024, office ltsc 2021, office 2019, and office 2016 (including project and visio) all volume.