Software Applications need a product key as part of the installation process for office.com/setup. If you have lost your key, you will need to find it before you can install or reinstall the Application.
Open the Safari browser and go to office.com/setup.
Now, Sign in to your existing Microsoft office account or create a new account.
Enter your Office product key, select Country/Region, and choose your language.
Then, click “Next.”
Now, your product key is confirmed, and click Next to go to your Microsoft account.
Then, at the top of the page click Services & Subscriptions.
Click Install to start downloading your office installer package.
Then, click on Finder and go to the Downloads folder, double click on it to launch the setup.
When the first installation screen appears, select Continue to start the office installation process.
Then, accept license terms and click “install.”
Choose how you wish to install the Office Setup and click Continue.
Once the installation completes, you’ll get a message “Installation was successful.”
Now open any office app like Word, Excel, PowerPoint, and sign in to activate your office.
Congratulations! Office is installed and activated. You’re all set.