Activate volume licensed versions of Office by using KMS
https://learn.microsoft.com:443/en-us/deployoffice/vlactivation/activate-office-by-using-kms
WEBMar 1, 2023 · Applies to: Volume licensed versions of Office LTSC 2021, Office 2019, and Office 2016 (including Project and Visio) All volume licensed versions of Office, including Project and Visio, have a Generic Volume License Key (GVLK) preinstalled. GVLKs support both Key Management Service (KMS) and Active Directory-based activation.
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