: Required for downloading the initial installer and the Volume License (VL) Serializer. Installation Steps

: To avoid conflicts, uninstall any existing Microsoft Office applications.

Before installing version 16.55, ensure your system is prepared:

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

The installation of LTSC for Mac generally follows a two-part process: installing the software and then activating it via the VL Serializer.

: You must have administrative rights on the Mac to run the installer and the activation serializer.