(Note: I used Microsoft support/download pages to gather these sources.)
The allows administrators and advanced users to deploy spelling, grammar, and language-specific writing aids across multiple machines without requiring an active internet connection for each installation. This is particularly useful in air-gapped environments, remote sites with limited bandwidth, or when standardizing language support across an organization. office 365 proofing tools offline installer
This online-only approach fails in three common scenarios: (Note: I used Microsoft support/download pages to gather