Harold Fuchs posted a comment on discussion Help

The simplest way I can find is this: 1. Navigate to the folder in which you want the archive. 2. Create a new compressed folder [right click, select New, select Compressed (zipped) Folder] 3. Rename the new folder, including the ".zip" extension to whatever you want the archive to be called and with a ".7z" extension, for example "test.7z". When asked if you are sure you want to change the extension, click Yes. 4. You now have a new, empty 7zip archive in the right place.