How to repair a MS Office installation Windows 10

Right-click the Start button Windows Start button in Windows 8 and Windows 10 (lower-left corner), and select Apps and Features on the pop-up menu.

Screenshot of start menu showing Apps and Features

Select the Microsoft Office product you want to repair, and select Modify.

Note:¬†This will repair the entire Office suite even if it’s just one application you want to repair such as Word or Excel. If you have a standalone app installed, then search for that application by name.

Depending if your copy of Office is Click-to-run or MSI-based install, you’ll see the following options to proceed with the repair. Follow the steps for your installation type.

Click-to-run

In the window How would you like to repair your Office Programs, select Online Repair > Repair to make sure everything gets fixed. (The faster Quick Repair option is also available, but it only detects and then replaces corrupted files.)

MSI-based

In Change your installation, select Repair and then click Continue.

Follow the instructions on the screen to complete the repair.