Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello,
Welcome to Microsoft Community and thank you for posting your query.
I know how difficult it is if Office application does not work as expected.
Let me assist you with Office applications.
This issue could have occurred due to multiple version or Office application corruption.
To resolve this issue lets run the ‘fix it tool’ from the following article which will remove all the installed components of Office 2013 from the computer.
http://support.microsoft.com/kb/2739501
Once the uninstallation is completed you may sign in to www.office.com/myaccount using the subscribed/registered email address, download and install Office from my account page and verify the status.
You may also refer to the general troubleshooting steps mentioned in the article below while installing Office 2013/Office 365 subscription.
http://support.microsoft.com/kb/2822317
I hope the above information helps. Let us know if you need further assistance.
Thank you.