A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The 'Repair Now' button will only perform a quick repair of Office and that rarely resolves the problem, the best option is to perform a full online repair of your Office installation.
Open the Settings App (gear icon on your Start Menu)
Go to Apps, then scroll down to find Microsoft Office
Select that and choose Modify - Online Repair
That should fix any issues with your Office Installation.