After a series of demos, Microsoft has finally released the official version of MS Office 2019. This is a stable version, which means that you can now download and use it without worrying about the fatal errors you received in the beta in the past. However, I'm sorry that according to the release, Microsoft Office 2019 only works on Windows 10. If you are using Windows 8.1 or earlier, you cannot install it. Frankly, I hate what Microsoft did to get users to use Windows 10. I think Office 2016 is still a good choice for casual users. Furthermore, Microsoft Office 2019 Activation helps you to enjoy all features of Office.