Openoffice is a popular office suite that is used by millions of people around the world. It’s free and open source, and it can be installed on any Windows 10 computer. There are a few ways to make Openoffice default on Windows 10, but the most common way is to use a tool called “OpenOffice.org Settings.” This tool can be found in the “Tools” menu of the Start menu. To use OpenOffice.org Settings, you first need to create a new file called “OpenOffice.org Settings.” This file will contain your Openoffice settings. Next, you need to add the following line to your file: “OpenOffice.org Settings = (Default)” This line will make Openoffice default on Windows 10 when you open it up. If you want to change how Openoffice behaves when you start up, you can also add new lines to your file. But be careful not to change too much at once - changing one setting might cause other changes to take effect!