I found these instructions on Microsoft's support site. - Not sure if I am allowed to post them here...

To uninstall any register of office you will be able to run next file: Then, sign in into office.com/MyAccount with the email associated to the product to install it again. Also here you will check the whole process: Any other concern just let me know. To solve the problem of bulk MS Office update to the latest version on all user computers (Office 2016 should be deployed through SCCM and activated on Office 2016 KMS server), we needed to develop a simple script to automatically and correctly remove of any previously installed versions of Microsoft Office. Here’s how to remove Office 2016 for Mac manually. Go to your Applications folder in Finder. Hold down the CMD key next to the space bar and select all Office 2016 for Mac programs that are installed i.e. Microsoft Excel, OneNote, Outlook, PowerPoint and Word. Then Ctrl-click or right-click and select Move to Trash.

Remove Office 2016 for Mac applications

From Microsoft support page - https://support.office.com/en-us/article/Troubleshoot-Office-2016-for-Mac-issues -by-completely-uninstalling-before-you-reinstall-ec3aa66e-6a76-451f-9d35-cba2e14 e94c0

IMPORTANT Follow the steps in this article only if you've tried the usual Office for Mac uninstall process and are still having difficulty reinstalling or starting Office applications.

To completely uninstall Office 2016 for Mac you must remove the applications, supporting files, and keychain entries, plus any icons you've added to the Dock. Once you've removed everything, empty the Trash and restart your Mac to complete the process.

You must be signed in as an administrator or provide an administrator name and password to complete these steps.

There are several things to remove. This article steps you through each one.

Step 1: Remove Office 2016 for Mac applications

1. Open Finder and click Applications.
2. Command +click to select all of the Office 2016 for Mac applications
3. Ctrl+click or right-click the applications you selected and click Move to Trash.

Step 2: Remove supporting files from the Library and User folders

Remove files from the Library folder, you'll need to first set the Finder View options.

1. Open Finder, click Go > Computer, and then click View >as Columns.
2. Go to Macintosh HD > Library > LaunchDaemons.
3. In the LaunchDaemons folder, ctrl+click or right-click this file if present, and then click Move to Trash.

   com.microsoft.office.licensingV2.helper.plist (if present)

4. Go to Library > PrivilegedHelperTools, ctrl+click or right-click this file if present, and then click Move to Trash.

   com.microsoft.office.licensingV2.helper (if present)

5. Go to Library > Preferences and ctrl+click or right-click this file if present, and then click Move to Trash.

   com.microsoft.office.licensingV2.plist (if present)

Remove files from your user Library folder

To remove files from your user Library folder, you'll need to first set the Finder View options.

1. In Finder, press +Shift+h.
2. On the Finder menu, click View > as List, and then click View > Show View Options.
3. In the View Options dialog box, select Show Library Folder.
4. Switch back to Column view (+3) and click <YourUserName>Library > Containers and ctrl+click or right-click each of these folders if present, and then click Move to Trash.

5. Switch back to Column view (+3) and click <YourUserName>Library > Group Containers and ctrl+click or right-click each of these folders if present, and then click Move to Trash.

Step 3: Remove Keychain Entries

Open Finder > Applications > Utilities > Keychain Access and remove the following password entries:

2. Search for all occurrences of ADAL in the keychain and remove all those entries if present.

Step 4: Remove Office 2016 for Mac icons from the Dock

If you added Office icons to the Dock they may turn into question marks after you uninstall Office 2016 for Mac. To remove these icons, control+click or right-click the icon and click Options > Remove from Dock.

Step 5: Restart your computer

When you've removed all the files listed in this section, empty the Trash and restart your computer.

If you plan to reinstall properly See Also

Mac Office 2016 Update

Nov 8, 2015 7:10 PM