This will not allow use of office Apps for around 5 to 25 minutes depending on your computers Speed.
Repair Office Instructions
The steps to access the repair tool vary depending on your operating system.
Right-click the Start button (lower-left corner), and select Apps and Features on the pop-up menu.
Select the Microsoft Office 365 Apps for enterprise product you want to select Modify. Shown Below.
Select Online Repair and then Click Repair.