Activate Office 2021 Pro Plus & LTSC for Free — 2026
Office 2021 (Pro Plus and LTSC) uses the Click-to-Run installer with the new Office Licensing Service. The Ohook method bundled with KMSAuto Official patches the licensing DLL in place, producing a permanent offline activation that survives Office updates.
Why choose Ohook over KMS
- No 180-day lease — activation is truly permanent.
- Works completely offline (KMS requires the activator to relaunch every 6 months).
- Compatible with both Pro Plus and LTSC SKUs.
- Does not register a scheduled task.
Step-by-step
- Close all Office apps (Word, Excel, Outlook, Teams).
- Run KMSAuto Official as administrator.
- Open the Office tab → choose Ohook (green button).
- Wait for the "Office Activation successful" message.
- Reopen Word and check File → Account → Product Activated.
Troubleshooting
- If Ohook reports "OSPP.VBS not found", reinstall Office via the ODT.
- If activation reverts after an Office update, simply re-run Ohook.
- For Office 2024 use the same Ohook button — it auto-detects the version.
Get KMSAuto Official Now
Free, safe and open source — supports every Windows & Office release through 2026.
Download Activate Office 2021 Pro Plus & LTSC for Free — 2026🔐 Archive password: WYqejXiqBi97