| Feature | Official Office 2021 | The file ( ...v2307...x64.zip ) | |--------|---------------------|--------------------------------| | Installer format | .iso , .img , online | .zip | | Visio/Project included? | Separate purchase | Bundled (unlicensed) | | Build number example | 16.0.14326.xxxxx | 16626.20132 (M365 build) | | Safe to use | Yes | No (high risk) |
A common trick used by pirates: They take a build (e.g., 2307, Build 16626) and change the product ID via registry hacks to say “Office 2021”. | Feature | Official Office 2021 | The file (
: Performance improvements, full dark-mode support, and new functions like and dynamic arrays in Excel. Microsoft Learn Package Components full dark-mode support