Microsoft Office 2021 For Mac — Ltsc 16.66 .dmg

Microsoft Office 2021 for Mac LTSC version 16.66 is a perpetual, volume-licensed suite designed for stability and compatibility with macOS Big Sur. It includes standard apps like Word, Excel, and Outlook, supporting both Intel and Apple Silicon, with main support ending on October 13, 2026. Installation requires a .pkg installer, often activated via a volume license serializer. For official installation instructions and to download the software, visit Microsoft Support . Update history for Office for Mac - Office release notes