Naturally, activation of Microsoft office 2019 needs to be purchased but from some commands, you can use problems. The method which I am going to guide won’t need to purchase or to waste money. I recommend you that uninstall Microsoft Office 2016 or 2016 because there are many features to use in 2019 and don’t care about activation or product key. Then I will obviously tell you that how you can sue Microsoft Office 2019 for a lifetime. If you have downloaded and installed Microsoft Office 2019 in your Windows 10 PC but it is only for 30 days. In this article, I will learn How to Activate Microsoft Office 2019 without Product Key on Windows 10 PC.