Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
On a Mac, reinstall Word by reinstalling Office, then launch Word to activate it.
- Sign in with the same Microsoft account originally associated with the Office purchase.
- Download Office for Mac.
- Open Finder > Downloads and double-click the installer package.
- On the installer screens, select Continue.
- Review the license agreement, select Continue, then select Agree.
- Choose the install options and select Continue.
- To install only certain apps, select Customize and uncheck the apps that are not needed.
- Select Install.
- Enter the Mac login password if prompted, then select Install Software.
- When installation finishes, select Close.
- Open Launchpad and select Microsoft Word.
- In the What’s New window, select Get Started to begin activation.
If Office originally came preinstalled and did not require a Microsoft account or product key, reinstall it from the Microsoft Store app instead.
If Word was installed from the Mac App Store and needs a clean reinstall, close the Office apps, open Finder > Applications, move Word, Excel, PowerPoint, and Outlook to Trash, then reinstall the Office apps using the Microsoft download package.