How to Move Office 2021 for Mac to a Replacement Computer
Question details
The user needs to transfer an Office 2021 Home and Business for Mac license to a new machine because the original Mac is broken, but the product key is reporting as already redeemed.
- Product
- Office 2021 Home and Business for Mac
- Device & OS
- macOS
- Scenario
- Replacing an unusable computer and attempting to reinstall and activate a previously purchased Office 2021 software.
- Observed behavior
- The product key cannot be used to activate the software on the new computer because it reports being already redeemed, preventing the user from using Office.
Ensure you have the login credentials for the Microsoft account initially used to redeem the Office 2021 product key, and have your original proof of purchase ready in case you need to contact support.
Download and Activate Office from Your Microsoft Account
Because a product key can only be redeemed once, you must reinstall Office directly from the Microsoft account linked to your initial purchase.
Product keys are single-use tokens used to bind your Office license to your Microsoft account. Once redeemed, you manage your installations digitally rather than reusing the 25-character key.
Go to the Microsoft account Services & Subscriptions page using your web browser and sign in with the exact account originally used to redeem the product key.
Scroll through your list of purchased products until you find your 'Office 2021 Home and Business for Mac' license.
Click the 'Install' button next to your Office 2021 product to download the installation package to your new Mac.
Run the downloaded installer. Once finished, open any Office app like Word, and sign in with the same Microsoft account when prompted to activate the software.
Remove Conflicting Licenses on the New Mac
If your new Mac previously had another Office installation or trial, old license files might prevent your Office 2021 from activating.
Contact Microsoft Support for License Transfer Assistance
If the automated activation fails because the license is still strictly tied to the broken Mac, a support agent can manually release it.
Switch to WPS Office for a Hassle-Free Experience on Mac
If transferring your Microsoft Office license is proving too difficult, or your old license is completely blocked by Microsoft's activation servers, try WPS Office. It provides a lightweight, free alternative to Microsoft Office that is highly compatible with all your existing files without complex licensing restrictions.
- 1. Download for Mac: Visit the official WPS Office website and download the free installer for macOS.
- 2. Install the software: Open the downloaded file and drag the WPS Office icon to your Applications folder.
- 3. Open your files: Launch WPS Office and seamlessly open, edit, and save your existing Microsoft Office documents.
Frequently Asked Questions
Why does my Office 2021 product key say it has already been used?
Product keys are only used once to link the Office license to your Microsoft account. After the first redemption, the key becomes invalid. You must manage your installation by signing into the Microsoft account linked to that key on the Services & Subscriptions page.
Do I need to uninstall Office from my broken Mac before installing it on the new one?
Normally, you should uninstall it to free up the license. However, if the old Mac is completely unusable, you cannot uninstall it. In this scenario, you can install it on the new Mac and sign in. If activation fails, you will need to contact Microsoft Support to manually release the license from the dead machine.
Can I transfer my Office 2021 Home and Business license to another person?
Office 2021 licenses are permanently bound to the Microsoft account used during the initial setup. You cannot transfer the license to a different Microsoft account, but you can install it on a new computer that you own by logging in with your original account.
What should I do if Word says 'No License Found' on my new Mac?
First, ensure you are signed into the exact same Microsoft account used to purchase or redeem Office 2021. If the account is correct, you may have hidden conflicting licenses from previous Office versions or trials that need to be cleared out using the official Microsoft License Removal Tool.
