Microsoft Office 2021

Microsoft Office 2021 (third release codenamed Office 16) is a version of the Microsoft Office suite of applications for the Microsoft Windows and macOS operating systems. It was released on October 5, 2021. A successor, Microsoft Office 2024 is expected to be rolled out in the second half of 2024.

Office 2021 retains the same major version number of 16 that previous versions of Office had. It introduces new dynamic arrays, XLOOKUP features for Excel, full dark-mode support and performance improvements. Support for retail versions of Office 2021 will end on October 13, 2026; unlike older versions of Office, there is no extended support period.

Development
The office suite updates include better support for the OASIS OpenDocument file format. The version update adds features to the LET function, has better search for XMATCH function, dynamic arrays, XLOOKUP. It enhances Ink for Translate in Microsoft Outlook and PowerPoint.

Office 2021

 * Office Home & Student 2021: Office Home & Student 2021 includes the core applications: Word, Excel, PowerPoint, and OneNote. Office Home & Student 2021 can be installed either on PC or on Mac.
 * Office Home & Business 2021: Office Home & Business 2021 includes the core applications and Outlook. Office Home & Business 2021 can be installed either on PC or on Mac.
 * Office Professional 2021: Office Professional 2021 includes the core applications, as well as Outlook, Publisher, and Access. Office Professional 2021 is exclusive for PC only.
 * Office Professional Plus 2021: Office Professional Plus 2021 includes the core applications, as well as Outlook, Publisher, Access, and Teams (replacement of previous Skype for Business). Office Professional Plus 2021 is exclusive for PC only.

Office 2021 supports installation by using a product key to associate with a Microsoft Account (MSA), then by activation.

Office LTSC 2021
Volume licensing perpetual branch of Microsoft Office, 3 editions were released:
 * Office LTSC Standard for Mac 2021: Office LTSC Standard for Mac 2021 includes the core applications as well as Outlook. It is only available for Apple Macintosh computers.
 * Office LTSC Standard 2021: Office LTSC Standard 2021 includes the core applications, as well as Outlook and Publisher. Office LTSC Standard 2021 is only available for Microsoft Windows PCs.
 * Office LTSC Professional Plus 2021: Office LTSC Professional Plus 2021 includes the core applications, as well as Outlook, Publisher, Access, and Teams. Office LTSC Professional Plus 2021 is only available for Microsoft Windows PCs.

Default font change
Midway through the life cycle of Office 2021, in July 2023 – after two years of evaluating five newly commissioned fonts – the default font across all Office applications was changed to Aptos. This marked the first time since Office 2007 that Microsoft had changed default fonts.