Microsoft has confirmed that the new Office 2103 will not run on older PCs powered by Windows XP or Vista.
"The new Office will work with Windows 7 and Windows 8," a Microsoft spokesperson said Monday in an email reply to questions about Office 2013 and Office 365. "Vista or XP will not support the new Office."
Users running those operating systems will not be able to advance beyond Office 2010, the suite that launched about seven months after Windows 7.
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Windows XP, Vista Miss Out on Office 2013 | PCWorld