Run the setup, enter your 25-character product key (e.g., XXXXX-XXXXX-XXXXX-XXXXX-XXXXX ), and Office will activate directly with Microsoft’s servers.
| Feature | Office 2021 LTSC | Microsoft 365 Apps | Office 2024 (Expected) | | --- | --- | --- | --- | | | One-time | Monthly/yearly | One-time | | Feature updates | None (security only) | Continuous | None (at launch) | | Cloud integration | Minimal | Full (OneDrive, Teams) | Minimal | | AI features | No | Yes (Copilot) | No | | Support end date | Oct 13, 2026 | Ongoing | ~2029 | microsoft office 2021 ltsc professional plus 16 link
If a website offers a free, direct download of Office 2021 LTSC Professional Plus with no key required, they are lying. Protect your data, your identity, and your computer by staying away from unofficial links. Run the setup, enter your 25-character product key (e