An Office product key uses a combination of 25 letters and numbers, and looks like this: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX.
Downloaded Office from an online store - check your email receipt from the store (may be in your Junk folder).
Bought a physical box or card - look on the card or packaging.
Office came with your computer - look on the Certificate of Authenticity.
Article ID: 4027908 - Last Review: 17 Aug 2017 - Revision: 1