This guide installs and activates Microsoft Office 2021 Home and Business for Mac bought from license4u.co.
- Redeem the key at setup.office.com, signing in with the Microsoft account you want to own the licence. Enter the 25-character key and confirm.
- Download and install the Office 2021 for Mac package from the same page (or from Services & subscriptions in your Microsoft account), then run the .pkg installer.
- Activate by opening Word and signing in with that same Microsoft account. The licence is picked up automatically.
- Tidy up: remove any older Office apps once the new suite is activated.
If activation fails
Confirm you are signed in with the account the key was redeemed to and that your macOS version is supported by Office 2021. Sign out and back in from Word > Preferences if the licence does not appear, then contact support@license4u.co with your order number.
Buy the licence here: Microsoft Office 2021 Home and Business for Mac.