Have you ever needed to change the product key of your Microsoft Office 2013 product? Perhaps you incorrectly entered the key initially and now Office isn’t working. Locate the original product key that you purchased for your software and follow these instructions.
1. Open a command prompt. You can do this by pressing the Windows button and then typing cmd and pressing enter.
2. Next type the appropriate command for your operating system.
For 32 bit Windows:
cscript “C:\Program Files\Microsoft Office\Office15\OSPP.VBS” /inpkey:yourkey
For 64 bit Windows (assuming you are using 32 bit Office):
cscript “C:\Program Files (x86)\Microsoft Office\Office15\OSPP.VBS” /inpkey:yourkey
You need to replace yourkey with your actual product key.
If you are installing a 64 bit version of Office on 64 bit Windows, the command for 32 bit Windows should be used or you can just delete the (x86) part since it won’t be installing to the C:\Program Files (x86)\ directory.