Office 2021 Home & Business for Mac is a one-time purchase — no subscription — and after redemption the licence lives on your Microsoft account, so you can reinstall any time without the key.
System requirements
- macOS Monterey (12) up to Sequoia (15) · Intel or Apple Silicon
- 4 GB RAM (8 GB recommended) · 10 GB free disk · 1280×800 display · internet + a Microsoft account for activation
Step 1 — Redeem your product key
- Go to setup.office.com.
- Sign in with your Microsoft account (create a free one if needed) — the licence binds permanently to this account, so use one you control.
- Enter the 25-character product key from your TechHub delivery email and confirm your country/language.
Step 2 — Download & install
- After redemption, click Install on the confirmation page (or later at office.com → Install) to download the Mac installer (~2–3 GB).
- Open the downloaded .pkg file and follow the prompts — accept the licence terms and confirm the install location.
- Installation typically takes 3–8 minutes.
Step 3 — Activate
- Open any Office app (Word, Excel, PowerPoint or Outlook).
- When prompted, sign in with the same Microsoft account you redeemed the key with.
- The licence activates online automatically — done.
Because the licence lives on the account, reinstalling on a new Mac is just: install → sign in. You never need the key again.
Troubleshooting
- Key rejected — type it exactly (0/O, 1/I) and make sure you're redeeming at setup.office.com, not inside an app.
- Activation fails — the sign-in account must match the redemption account. Check which account holds the licence at account.microsoft.com → Services.
- Apps missing after install — run the installer again; it repairs the app set.
- Deactivated after a macOS update — open any Office app and sign in again; the licence re-attaches instantly.
- Not enough disk space — free at least 10 GB before running the .pkg.
Get a genuine key
Office 2021 Home & Business for Mac keys with instant delivery — available at TechHub with free activation support.