I purchased Office 2013 Pro Plus Key back in February and had it installed on Windows 7 64 bit with no issues. Re-did system clean with Windows 8.1 Pro (legal key). All good and activated. Installed Office from original ISO that I had saved “OfficeProfessionalPlus_x86_en-us” After installing I put key in and tries to activate and it won’t. I did the phone activation and nothing. Anyone have any ideas?