Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
See ""Something went wrong" error when you install Office 2013 or Office 365" at:
http://support.microsoft.com/kb/2827031/en-us
and, if necessary http://support.microsoft.com/kb/2822317
If that does not help, then you might remove all traces of the Office installation by running the fixit from the following article:
http://support.microsoft.com/kb/2739501
and then reinstall Office by logging into www.office.com/myaccount with your registered email address and click Install Office.