Unofficial "portable" versions (software that runs without installation) and "preactivated" versions (software modified to bypass licensing) carry significant hazards: Go to product viewer dialog for this item. Microsoft Office Professional Plus 2021
: Faster calculations in Excel and improved stability across the suite. Risks of "Preactivated Portable" Versions
: Microsoft Teams integration for communication. Key Features of the 2021 Version
Official versions of Office 2021 introduced several performance and functionality upgrades: