Microsoft Mac Office Remove License Tool Download
If you're troubleshooting Office and would like to remove the license files on your Mac, you can use the license removal tool. This will completely remove all licenses for Office for Mac.
After installed License Removal tool, open any Office app and sign in to activate with the email account associated with your Office for Mac license. If you're troubleshooting an issue, you may need to reinstall Office before signing in.
After you've successfully activated, restart your computer and then you're good to go!