Microsoft Office LTSC for Mac 2021 (Version 16.55) is a specialized, volume-licensed version of the productivity suite designed for organizations that require a "locked-in" feature set without a subscription. Unlike standard retail versions, it does not receive new feature updates. Pre-Installation Requirements
: You must have administrative rights on the Mac to run the installer and the activation serializer. Microsoft Office LTSC for Mac 2021 v16.55
Before installing version 16.55, ensure your system is prepared: Microsoft Office LTSC for Mac 2021 (Version 16
The installation of LTSC for Mac generally follows a two-part process: installing the software and then activating it via the VL Serializer. Microsoft Office LTSC for Mac 2021 v16.55
: Required for downloading the initial installer and the Volume License (VL) Serializer. Installation Steps