- Make sure you have a copy of your old Office product key that you are uninstalling if you wish to install it back later.
- Save all your work, this will require restarting your PC
You will temporarily have no Word, Excel, Powerpoint, etc installed on your PC until you install the new version of office.
- In the bottom left search for Uninstall
Click on "Add Remove Programs"
- Search for Office, then click Uninstall
- Click the second Uninstall
- Click "Yes" we want to uninstall
- Wait while it uninstalls
- Click Close
- Reboot and try to install the Office product again