New functions like XLOOKUP and Dynamic Arrays in Excel.

Released as part of the update, Build 16626.20132 focused on stability, security, and minor performance refinements for the retail and LTSC (Long-Term Servicing Channel) versions of Office 2021. Key Components in this AIO Build:

Enhanced performance across all apps, especially for large datasets in Excel. Deployment and Requirements KB16626.20132 - MS21-O2021R - ManageEngine

Support for the OpenDocument Format (ODF) 1.3 specification.

Full dark-mode support and a refreshed UI designed to align with Windows 11.

A powerful diagramming platform with built-in stencils to simplify complex information into easy-to-understand visuals.

Includes the core suite—Word, Excel, PowerPoint, Outlook, OneNote, Publisher, and Access.

Unlike subscription-based Microsoft 365, Office 2021 is a perpetual, one-time purchase . Major features introduced in the 2021 version (and present in this build) include: