You can choose one of two options when you perform a repair: It can also help resolve issues that poorly-written add-ins can sometimes cause.
It isn’t as good at solving specific problems–especially with Outlook–as the troubleshooting tool that business owners can use, but it is good at helping to resolve installation problems and often for fixing individual Office programs that won’t start or keep crashing on you. Whether you’re using Office 365 Home or Business, you can try to repair an Office 365 installation by re-running its Setup program from the Control Panel. RELATED: How to Scan for (and Fix) Corrupt System Files in Windows All Office 365 Users: Repair an Office Installation from the Control Panel
