Changing Product Key for Office XP/2002, Office 2003 or Office 2007
Changing the product key for Office 2010 or Office 2013 does not require access to the registry, either directly from the control panel or through the command line.
To make changes through the control panel, open the Add/Remove Programs applet (Windows XP) or the Uninstaller applet (Windows Vista, Windows 7, Windows 8, or Windows 10). Find your Office 2010/2013 application and press Change. The installer will now begin with the Enter Product Key option, which allows you to enter a different product key.
You can also change the product key through the OSPP.VBS script. Instead of using the /dstatus switch, you must replace the product key value with the /inpkey:value switch.
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