MAK activation requires that a MAK is installed on a client computer and instructs that computer to activate itself against those services.Įach MAK has a predetermined number of allowed activations and is based on your volume licensing agreement. Multiple Activation Key (MAK) activation is used for one-time activation through Microsoft-hosted activation services, either via the internet or by telephone. Applies to: Volume licensed versions of Office LTSC 2021, Office 2019, and Office 2016 (including Project and Visio)
