Microsoft Office 2021 is currently in its mainstream support phase, which is scheduled to end on October 13, 2026 . Safe & Recommended Installation Methods
This specific build was part of the standard update cycle for Office LTSC 2021 , a perpetual, one-time purchase version designed for regulated environments. Microsoft Office 2021 is currently in its mainstream
Instead of downloading untrusted zip files, use Microsoft's official deployment tools to ensure you have a clean, authentic copy: Update history for Office LTSC 2021 and Office 2021 Microsoft Office 2021 is currently in its mainstream