I tried the phone activation and it said the activation number was wrong & hungup. Then I tried doing the online activation from inside Excel & it said the key was invalid & to use phone activation. Recently just one of the machines started saying its product key is invalid.Īs the system administrator I went into the uninstall windows, selected 'change' and entered the key again, restarted, and nothing changed. We bought 12 product key cards for Office Professional Plus 2013 from an on-line reseller.Īll 12 copies were installed on Windows 7 圆4 Professional machines at the end of September 2014.Īll machines had previously had Office 2003 Pro installed on them & it was uninstalled before installing 2013. One of my Office 2013 installations recently started saying its product key is invalid.
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