The first result led him to a Microsoft support page, which walked him through the process of recovering a lost product key. John followed the steps, but unfortunately, his key wasn't linked to his Microsoft account. The next result pointed to a forum discussion, where users shared their own experiences with lost product keys.
If you encounter any issues while using your index of MS Office 2016 product key, here are some troubleshooting tips: index of ms office 2016 product key top