How to change the saved Office 2013 Product Key?

Question

I installed Office 2013 and put in the product key when it asked me to. After typing in the product key, it allowed me to use MS Word once. After I closed MS Word and went to reopen it the next day, it said the product key I entered was incorrect (maybe I typed it in incorrectly). It asked me to change it. I tried opening MS word and clicking File -> Account but was unable to change the product key from there.I then went to control panel -> uninstall a program and then clicked on Office 2013 and clicked 'change' but it gave me no option to change the product key. So I decided to uninstall and reinstall it.I uninstalled it and then went to reinstall it with the setup file and now it is giving me an error saying: Error 25004. The product key you entered cannot be used on this machine. This is most likely due to previous Office 2013 trials being installed.The first product key I entered seems to be saved somewhere. How do I delete / change it?

Answer 1

Method 1: Via Office Application Settings

1. Open any Office 2013 application (e.g., Word, Excel).

Click on File > Account. 

Under Product Information, you should see details about your current Office product and its activation status. 

Click Change Product Key (or potentially Switch License and then choose to enter a product key). 

Enter your new product key carefully and click Continue to activate. 

Method 2: Via Command Prompt 

1. Open Command Prompt as an administrator.
2. Navigate to the ospp.vbs script location, which varies based on your Office and Windows architecture:
3. For 32-bit Office on 32-bit Windows: cscript "C:\Program Files\Microsoft Office\Office15\ospp.vbs" /inpkey:yournewproductkey
4. For 32-bit Office on 64-bit Windows: cscript "C:\Program Files (x86)\Microsoft Office\Office15\ospp.vbs" /inpkey:yournewproductkey
5. For 64-bit Office on 64-bit Windows: cscript "C:\Program Files\Microsoft Office\Office15\ospp.vbs" /inpkey:yournewproductkey
6. Replace yournewproductkey with your actual new product key.