When you open Microsoft Word, Excel, or PowerPoint for the first time, you may see a message that says: “Unlicensed Microsoft Office.”
Microsoft Office 2019 comes in many editions. Office 2019 unlicensed product is common among Home and Student versions. Others Business, Professional and Professional Plus. To use the core applications in any edition, you need to activate the proper method for each edition.
Do you still need help? Go to the Microsoft community.