Open any Microsoft Office application. In your Mac's menu bar, click Help and choose Check for Updates.

NOTE: Before updating the Microsoft Office software, please ensure that you have administrative rights to your computer and that all Microsoft applications are closed.

1) Open any Microsoft Office application, such as Microsoft Word.

2) In your Mac's menu bar, click Help and choose Check for Updates.

2) Check the box next to Automatically keep Microsoft Apps up to date. This will ensure that your Office apps always stay updated.

3) Click the Update button.

4) Please wait while the updates are downloaded and installed.

5) Continue repeating these steps until it shows "All apps are up-to-date."

Outcome

Your Microsoft Office apps are updated.

When you open an app for the first time after updating it, it may show a brief status screen showing that the app is being verified. This is a standard macOS panel that will disappear once the app has been verified.