Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Check if there are any trial applications from Office professional 2010 installed on the system. Refer the link given below to uninstall the trial applications and check if it helps:
http://office.microsoft.com/en-us/word-help/remove-or-uninstall-office-2010-trial-HA101972584.aspx