For volume license customers (organizations with Software Assurance or an Enterprise Agreement), the offline installer is available via the or the Microsoft 365 Admin Center (for certain licenses). However, these are not accessible to the average user.
: Automatically fixes common regional misspellings. Why Use an Offline Installer? office 2021 proofing tools offline installer best
: The language might be installed, but not activated in your active document settings. office 2021 proofing tools offline installer best