To update Microsoft office, they release security and quality upgrades for the Click-To-Run (C2R) through office.com/setup, which is exclusively C2R. These upgrades are released approximately once a month, generally on the second Tuesday of the month.
Setup at www.office.com/setup
1. Go to office.com/arrangement for Office Setup.
2. Sign In or Create another Microsoft Account.
3. Discover your Office Product Key.
4. Enter Microsoft Office Product key.
5. Select your Country and Language.
6. Download Office Setup and adhere to On-Screen directions.
7. Finish the Installation Process and Run the Applications.