I'm working on a Win 8.1 PC that was originally setup with a copy of Outlook 2013. A license card of MS Office Home Student 2013 was purchased and installed. It installs via a web link. The installation acted liked it worked. However when we go into File, Account in Excel or Word, it says it is part of the enterprise suite and is not activated. So we uninstalled Outlook 2013 downloaded the ISO for Office Home Student 2013 and used the same Product Key from the Home Student version. Again, it acted like it installed ok, but then it still showed as an unactivated enterprise product under File, Account. In the control panel , it correctly shows Home/Student as the installed version. It seems clear that there is a piece of the original Outlook that is causing the problem. Anyone know how to correct this issue? Last time I ran into this, I nuked and repaved but that is not an option for me this time.