Here are the steps to install Office offline:
: Reduces background data syncing and cloud-based prompts. Method 1: The Official Account Portal (Home & Personal) office offline install
However, Microsoft has reduced offline support for – e.g., no offline activation without periodic reconnection (every 180 days). For fully air-gapped, LTSC 2021 (based on Office 2019 codebase) is the last true offline-first version. Here are the steps to install Office offline: