Open the Terminal application Enter cd /Library/Application\ Support/Microsoft/MAU2.0/Microsoft\ AutoUpdate.app/Contents/MacOS Run ./msupdate –help
Details here docs.microsoft.com/en-us/deployoffice/mac/update-office-for-mac-using-msupdate <docs.microsoft.com/en-us/deployoffice/mac/update-office-for-mac-using-msupdate>