1. Click on the Wndows Icon
2. Click on the Cog
3. Click on Apps
4. Click in the 'Search this list' and type in Office to filter the installations
5. You will the see a list of Office related software, click on the Office Version you have
6. Click on Modify
7. If you get the 'Do you want to allow the application to make changes' Click on Yes
8. Click on
   1. Online Repair
   2. then Repair
9. Office will now reinstall Office using all the lasted versions.