If Office is already installed and activated, you may be able to see the of the key to help you identify which license is in use:
If you bought a physical box, the 25-character key (XXXXX-XXXXX-XXXXX-XXXXX-XXXXX) is typically found on a card inside the box or printed on a sticker on the disc sleeve. Index Of Ms Office 2016 Product Key
cscript "C:\Program Files\Microsoft Office\Office16\OSPP.VBS" /dstatus Third-Party Tools : Utilities like Belarc Advisor If Office is already installed and activated, you