How do I reinstall Office 2013 which I purchased in May 2015. I do have the Activation code.

https://products.office.com/en-au/download-back-up-restore-microsoft-office-products?legRedir=true&CorrelationId=98d1429c-9a05-42e8-9130-b5102e7c4a86

Or, if you purchase via employment benefit (Home Use Program), goto www.microsofthup.com 

Hi,

First you will need to uninstall the previous installation from Control Panel -> Programs and Features. Then visit the link provided by Don, input the product key then download and install Office again.

Regards,

Melon Chen
TechNet Community Su